I think i have social anxiety how do i really know?

I don’t know weather I have social anxiety or I am just extremely shy.. I really don’t want to see a doctor about it , I think they will just make me think worse of it and try to put me on drugs. How can you tell ? Are there obvious signs if you have it or not? It seems to be worse when I am around females if there’s a attraction. Then again sometimes I am totally fine. I don’t know what triggers it.