Talking to People

I don't know why but I have the hardest time talking to people including my family. I get so worried/stressed/nervous about whatever I need to talk to anyone about because it feels like my head goes into a tailspin and I think someone's going to have a certain reaction. But, it's not true and it usually ends up being the complete opposite of the reaction I thought they would have. And I don't know where it comes from whether it's from the possible autism, anxiety, or possible bipolar. Has anyone ever had this issue before because it's been going on for a long time with me.