Early miscarriage or early period?

I’m just getting straight to it.

I’ve been on antibiotics while on birth control with partners in the past with no issue but this is a new parter. Not sure if that would even matter. I also had missed a few pills in this time period.

We had sex February 1, 2, 7, and 9th. My period was the 7-11th. Not too long after, my stomach started constantly feeling uneasy. More food aversions than EVER. Usually I eat everything in sight, but instead I lost 10 pounds because I can’t eat anything. I also started having really intense discharge and my vagina was constantly itchy. So badly I couldn’t sleep sometimes. I also started being constantly tired. I took pregnancy tests and they both said negative, but I didn’t use my first pee of the day and according to the Clear Blue website, I won’t really get accurate results until March 4th.

Friday (March 1) I noticed I was bleeding at about 2am (so started sometime after 10pm Thursday). It was straight brown, which isn’t normal for my period. Also, my period isn’t due until March 8th. I’ve been on birth control for four years and never have gotten my period early while on it. I’m still bleeding today, and it’s very heavy.

I just need some feminine advice on my actual situation rather than looking up girls who had similar experiences 😔 Idk what to think at all. This whole time, I’ve 100% thought I was pregnant.