Yes, I would find a therapist or counselor of some sort; do you have a friendly relative or other adult you can hang out with? I was like that, it's just that you haven't practiced with actual people :-) you live in your head too much! You have to learn to talk to other people; it's not something we automatically pick up. Those of us who are anxious can get to worrying about talking to other people before we have other people to talk to and that's putting the cart before the horse :-)

I was able to lessen my anxiety a little bit by remembering the "learning" aspect and approaching it like I would a school lesson. I know I'm bright :-) and knew I could learn anything someone would help teach me and therapists are good at "conversation" and learning how to be with other people without quite so much "noise" in our heads with who's thinking what and, what do I say, etc.