Preggers?

Couple weeks ago while on my period, my fiancé and I had unprotected sex. Didn't realize he came in me until after we got up to switch positions etc. sounds stupid, might not make sense. But we didn't do anything about it. I figured, oh I can't get pregnant while on my period. Dumb, right? Lol. Anyway, period stopped at least two days later. My periods have never been that short before. Got me thinking. Could I be pregnant? Still too early to test I believe.   Guess I'll wait a few more weeks to test. Just wanted to know if someone had been in a similar situation. 😊 thanks!