has this happened to you?

anyone here have a light period and still ended up being pregnant? I was 9 days late for my period, and yesterday morning I started bleeding. not super heavy but enough to think of it as a period. I still have crazy pregnancy symptoms, this would be my second pregnancy so I'm very in tune with my body. my periods are also VERY regular. I got 2 negative tests before I started bleeding. I feel like I might have ovulated late and I might actually be pregnant. I have a bump and it's hard down where my uterus is (I've always been told you show sooner with a second) and I've been very nauseous and threw up yesterday along with heartburn and slight cramping all last week along with frequent peeing. is it possible? anyone have a similar story? I know when I would have gotten pregnant and it could have been to early to test still by a week. I'm going to test again this weekend if I'm still having symptoms. I feel nauseous as I write this. thanks for any advice or stories :)