Period on pill

Hi guys. So I get my period every month on the pill and I’ve been w the same parter for a few years now. The past few months I’ve been feeling nauseous after I eat. It’s on and off (mostly oily foods or meat) but never actually throw up. I take my pill at the same time and have literally never skipped one.

Idk why now I’m thinking abt pregnancy but should I take a test in case? (I can’t tell if I sound crazy or not lol)

Or if I was preg on the pill, wud I even keep getting my period every month?