Weird Spotting!!??

My last period ended last week on Sunday. I’ve been on the birth control pill for 5 months and I’ve never missed a day taking it. Yesterday I had sex and we still use condoms everytime even though I’m on the pill. I was bleeding during and after sex, it was pretty rough sex so I figured that’s why. The blood was dark/bright red and then I ended up having brown discharge. Today at like 7pm I noticed I had some brown spotting in my underwear but whyyyy!!? It’s been making me anxious as I’ve heard of implantation bug it doesn’t make sense. I just ended my period last week, my next period is due in 14 days and if I wasn’t on the pill then these would be my ovulation days. I have safe sex and this is just freaking me out. Any ideas??