Suggestions?

I’m someone who deals with anxiety pretty bad & I have a fear of crowds and being the center of attention and I’m bad at making new friends because idk how to communicate well, until I get to know someone. I’m extremely shy and my face turns RED, and I’ve dealt with all that as far back as I can remember (currently almost 20) and I hate it, idk what to do to get out of it. I don’t want to care what people think, I want to be able to do what I want to do and not feel like I’m being judged and people are making fun of me and so on, I want to live my life and not fear what others think. What do you suggest I can do or tips to help me get over my social anxiety. I’m also VERY self conscious about myself i feel like I always look stupid & stuff. I have a 2 year old son and I’m currently pregnant and for example I want to wear a dress this pregnancy because during my first pregnancy I was 17 and I felt too judged to wear one, and now this baby is planned and I’m almost 20, but I look 15 so it makes me want to hide my bump but I don’t want to:/ please no mean comments as this is what I have dealt with forever and I’m reaching out for help/advice on how to get over it or manage it. Thank you:)