I had intercourse 2-3 days after my period. The condom broke and I used Plan B before the third day ended. I understand that the Plan B pill becomes more efficient when earlier used, but I'm concerned about the side effects.
Four days after Plan B, I got lower back pains (the same area-ish where I got an epidural for birth), bleeding from down below, and then I got a pain in my stomach.
The day after, which is today so far, I still have bleeding, and I believe I'm on my period, despite the fact I just had one last week? And currently I have a slight pain in my stomach.

Can anyone tell me what's going on?