20 weeks? Tests negatives? Anxiety? Horrible friends?

My friends were joking around and said that I look 15-20 weeks pregnant. Thing is, I’ve been having anxiety over this for months! I had sex back sometime in July(I don’t even remember exactly) but I’ve had my periods, 5, it was safe sex, I’ve taken tests, of course all are damn negatives but girls, I still feel like I’ve got a human up in me. So please tell me, are any of these tests positive and/or do I look 20ish weeks? My ‘friends’ are the worst and now I got anxiety a mile high🙄🙄🙄👌👌 I am over feeling like this, but Idk how to get out of this hump! Any suggestions?!