I've never been a people person on the best days, but this has become way worse lately and I'm glad to know this is normal. Meeting new people is practically torture, I get so much anxiety about it.
Last night I watched a movie with my best friend and 2 people I have only met in passing a couple of times. The movie was a horror flick anyway, but made even worse because it played directly on things that I went through as a teenager and I had some trouble watching it. But, even worse was that I was extremely uncomfortable with these new people watching the movie, I wouldn't even look at them when they talked to me. Eventually I moved to the other end of the couch so I was only sitting next to my best friend and I didn't have to really interact with them at all.
New people can be so nerve-wracking!