Confused? Could I be pregnant?

Ka

I started birth control on wed the 30th and had intercourse on the 2nd. Then the 4th and 5th I forgot to take my birth control pills and I had intercourse again on the 5th. Today is the 6th I woke up and started spotting pink spots on the toilet paper when I wiped and nothing more than that and it’s very very little amount also the next few times I’ve used the restroom it’s a little bit of brown discharge. But pretty much by now it’s almost the end of the day and it’s stopped. I’m no where near starting my period. Is there a reason why I’m spotting? The last thing I would think of is implantation bleeding but I’m just not sure at this point. Has anyone has a similar experience?