Did anyone have period like bleeding while pregnant?

It's not confirmed until oct 15th but by dates I'm 6 weeks today. I believe I ovulated around sept 3 (opk, temp and cm), but we didnt have sex. I was feeling so crappy after AF last month (nausea vomiting back pain boob pain) that I was sure I was out this month since We only had sex august 22 after AF and then a few days ago lol. We did a ton around possible ovulation in beginning of august though. My period was light and short, and a few days early. (3 days instead of 6-7 days) But I had to use 1 light tampon so figured it was too heavy for implantation. I've had the symptoms I have now since my period in august. And almost starting to wonder if I conceived before my august period. Just because that period was so strange for someone like me who has been regular since the beginning (16 years now). Or ovulation symptoms turned to pregnancy symptoms and I ovulated late august instead of early september? Idk the waiting game for this ultrasound is killing me. Lol