Swimming - suggests you feel as though you are swimming through the depths of your subconscious and emotions. The ease with which you are doing this activity will give you clues as to how well you are navigating through those very complex parts of yourself within your waking life. Swimming in murky water indicates an environment of negative, or depressive emotions.

Store - suggests that you are emotionally and mentally strained. Alternatively, you may be brainstorming for new ideas or looking for the various choices out there for you.

Boyfriend - It is common to have dreams with ex-boyfriends, though we might have a current partner right now. Usually your ex is a symbol of perfection and whatever you miss with a current partner may be brought up in your dream with your ex. If you dream of a specific person being your boyfriend, it suggests that there are aspects of the dream-boyfriend that you would like to see in your actual boyfriend.
It may also symbolize an actual relationship to a male figure in your life, or it may symbolize the relationship to your masculine side. Incorporating masculine aspects without letting them rule creates balance. Those masculine aspects that can be trusted.

Being 'mean' to you - suggests you feel that your boyfriend, or someone who reminds you of him, was unfair to you.

Having a son - signifies your ideals, hopes, potential, and the youthful(immature male) aspect of yourself.

Gift - signifies your generosity towards others. Alternatively, you may be trying to express some feeling or have something awkward to say that has to be carefully packaged.

Frustration - represents your difficulty in coping with a situation in your daily life. It may reflect your concerns that your life is not going in the direction you want.
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Have you been feeling overly stressed lately?
Did you have an argument recently with your boyfriend?
Do you need to tell someone something, but don't quite know how to go about it?
Have you been feel a bit emotional lately, or have you been told you're being over-emotional by someone?

Hope I could help you, good luck!