I don’t know (Also, contains TMI, Sorry)

So I’ve started the combination pill about 3 weeks ago. I’ve been spotting non-stop after my period ended (which was like 2 1/2 weeks ago).

The spotting was heavy for a while than wasn’t so much but it was still there, especially after I wiped (TMI, sorry). Now, when i’m horny and getting wet m, and go to start pleasuring myself, my undies are stained with blood.

Do I need to be worried?

Thank you for helping me out ladies. Really appreciate it.