Am I being ridiculous??

I've been vomiting for two months, which isn't too crazy for me, except I've been taking medicine that should have cleared that up by now. 1.5 months ago I had sex, used pull out, he came and it dripped inside me. Totally thought I was pregnant! I had a really abnormal period with no pms and it was way lighter than usual and didn't pick up. It was in the time line for either being period or implantation. I took a test the last day of bleeding and it was negative, so I started bc so I wouldn't have any more scares. Yet I still feel pregnant! It could be symptoms from the pill, but yeah I feel like I'm losing it!

Update 1: I haven't tested again! Should I do it? I'll feel a little silly if it's negative. But I guess that really is the only way to know, huh?