This may appear contradicatory but please contemplate patiently:
If you strongly believe you have SP when you dont, you will develop anxiety due to the way your mind is looking at things and sure enough SP will develop in your mind.
If you really have a SP, your mind will be completely familiar with anxiety in such a sense that it will be obvious to you and so you will say 'i know i have SP'.
From what you write, it doesnt indicate a social phobia but you definitely deal with anxiety. It indicates more initial stages of the development of the mind of phobia in which familiarity with anxiety is key. Where you associate the feeling of fear with certain situations or people.
If you continue to associate fear with being around others then phobia will develop. Dont let it.
Anxiety is a mistaken appearance to our mind which is not true. It makes us believe we are frightened of others. A deceptive state of mind which tricks us into developing phobia of others. Disbelieve the mind of anxiety when it arises in your mind, it says, "you are afraid of others" when really its nothing more than internal mental change. No one is scary, at all. It does however feel scary within our mind, this is why we then develop phobia.
Anyone who has a social phobia associates the feeling of anxiety with being around others, its completely mind made, people from their own side cannot give us a phobia.
What do you believe?
Jack