The hospital is a symbol for the need of healing....spiritual, physical, or psychological.

A feather is representative of your hopes and thoughts, sometimes vanity and false pride.

White is a feminine color. Symbolizing virginity, purity, well earned success, honesty, virtue, innocence, peace, happiness, joy, transformation, cleanliness, dignity, awareness, clarity of mind, hope, and light feelings, but also emotional coldness and immaturity.
White in a dream might possibly be a reminder to resolve special situations and problems.

Escaping suggests you feel the need to get away from something. Alternatively, it could be that you are not facing something in your waking life.

Being 'cornered' suggests you feel you are being cornered on your waking life. That you are facing a situation for which you cannot find a solution to.

If the man was totally unknown to you, or didn't remind you of anyone you know, then he would represent a masculine side to yourself that you may just becoming aware of.

Blue has always something to do with intellectual and spiritual events, insights, experiences, and mental processes.  Blue is a symbol of emotional contentment that we all would like to attain. It indicates that you want to live wisely and with compassion. Blue stands for intellectual goals, insight, faith, spiritual maturity, enlightenment, relief from worry, and assistance from outside sources.
Dark blue - depression, negative thoughts, and aggression.
Light blue - the sense of intuition, having a wide awareness of life, religious feelings, and the 'coolness' of nature.
Soft gentle blue - a typically feminine color, representing the nurturing and emotional expression.
Blue may sometimes symbolize the universal or collective unconscious (as distinct from the individual unconscious). Perhaps the dream is asking you to base your life on intuitions that come from a deep source within your psyche.
Alternatively, blue may represent the power of the conscious mind, particularly if it is the blue of the sky.
The blue sea may symbolize the unconscious or the feminine (anima, mother, or Great Mother, the wise self).
At an advanced level of mystical awareness, blue may represent the primal energy from which the universal life-force comes.

Dreams about teeth usually reflect your anxiety about your appearance and how others perceive you. Unfortunately, we live in a world where good looks are valued highly, and your teeth play an important role in our 'image'. Teeth are an important feature of our attractiveness and presentation to others. 
Teeth are also used to bite, tear, and chew. In this way, teeth represent power, and our own 'effectiveness'.  Because the smile was odd and there were gaps between the teeth, it would suggest that you feel there are 'gaps' or empty spaces somewhere within your waking life.

Woods/Forest - represent the aspects in the subconscious; a need for growth and strength. Also solitude, quiet, and an affinity for nature and natural things.

Black is the color of the subconscious, of sinking into the darkness, or mourning. Black is masculine; it is the color of night. Black stands for limitation, hidden things, despair, depression, things that are considered 'taboo', conservatism, old age, melancholy and sacrifice(the giving up of things to make you, or someone else happy), your shadow (an aspect of your personality that is hidden, unknown and/or repressed within your subconscious mind).

Graves are generally depressing and represent some form of death. On a very physical level this dream symbol does not appear to be a very happy one. However, the dream could also have deeper and more spiritual meaning. It could represent things which require deep thinking and are not "on the surface." Graves could also symbolize the subconscious. If someone close to you has recently died, it may be normal for you to have dreams about graveyards and death. However, if this dream is coming up and there has been no death in the family, consider your feelings in daily life. If you are feeling depressed or helpless in any way, "look inside" and make attempts to increase your self awareness and your spiritual identity.

Light is a very positive symbol. It represents enlightenment, lifting of shadow, the acquisition of understanding and knowledge, and a positive force. You may give the light spiritual or physical meaning. For some, the light may represent a higher force or power, God's presence, or rays of His love and peace. Others may find this dream reassuring as it may represent a well lit journey through life, or simply a solution to a current problem. Light always refers to consciousness.

Gold, symbolically, has connections with the sun and may represent new life, self-renewal; some new development in your psyche.
Gold, as something valuable, may symbolize either your true self, as distinct from your conscious ego, or some faculty in your psyche which, if accepted and activated, could bring you closer to your real self.

Your 'nan' - she would represent nurturing love, patience and wisdom.

Pain - signifies that you are being too hard on yourself with regards to a situation that was out of your control. It may also be a true reflection of real pain that exists somewhere in your body. Dreams can reveal and warn about health problems.

Pain in dreams is an interesting phenomenon. Sometimes, a peculiar sleeping position becomes the trigger event for a painful dream. It's the body's way of saying, "Hey... roll over!" However, the ability of the brain to produce physical stimuli that match the dream event is an amazing thing. It makes dreams that are emotionally realistic even more real.
Knees are part of the support system of the body. Pain or anything else that draws your intention to your knees, could suggest you need to be more flexible withemotions, attitudes or relationships in your life.

Healing/Healed - wise self. a healing within the psyche. Healing old emotional/physical/spiritual wounds. The opposite to dreams of injury or death are those dreams in which we become healed or reborn. Relatively rare, it may accompany a new start in your waking life or recovery from an illness. It suggests you are feeling hopeful, better, renewed or restored about something or yourself, or that something is stirring to life within you.

Someone pointing up in the air would symbolize the need to 'rise above' a current situation or issue that is troubling you.

Dreaming of angels always means that you study your present attitudes. The angel is a divine messenger that can give you some new insights in finding a new way. If a woman dreams of an angel, the angel represents a longing for harmony, emotional connection and guidance. Seeing an angel symbolizes good luck and shows the strength of your character.
The word 'angel' literally means 'messenger.' Often, delivery of a particular message in the dream is the role filled by these beings. As the needs arise, they may provide additional help to the dreamer beyond simply delivering information.
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The danger your angel speaks of is most likely a danger of a spiritual or psychological nature, rather than a physical one.(Danger of overstepping your bounds, going where you don't belong. Danger of saying something, or doing something you may regret later, etc.)

Is there something in your waking life that you don't want to face or accept?
Are you running away from a problem?
Are you in need of a rest....have you been pushing yourself too much?
Have you acted out rashly, or unwisely and now regret it?
Are you trying to achieve a goal, and are thinking about giving up, or have you abandoned a lifelong dream of doing something?

I hope I could help allay some of your fear, best wishes!