Pregnant or period

So long story short I was having unprotected sex multiple times this in the last 2 months I didn’t get a chance to test to be sure I wasn’t pregnant because I got what I think is my period but it was early and not as heavy as it usually is as well as not as long and my periods are always almost the same but i was just wondering is there any chance you get some bleeding like period and still be pregnant. If I was pregnant I’d only be like 3-4 weeks along. I know this is probably a stupid question.