Confused and scared

I’ve read way too much online honestly. Is it possible to have a period while pregnant? I’ve had 3 periods and all on time (maybe a day or two early) and they last the normal time but I’ve read that some women still bleed while pregnant?!? I have pms symptoms but they go away after my period. I think I ovulated this month since I had ewcm for a few days and it had blood in it one day. I’m not pregnant right? Google is the worst..