BFP test and bleeding?! Help?!

Rachelle
So I had 2 BFP tests on Christmas and on the next morning that I am pregnant...AF was supposed to come today but obviously since I'm pregnant I shouldn't have a period, but I'm having a bit of blood maybe implantation bleeding? It started out brownish dark red and only a few drops but now a few hours later I'm bleeding again, now it's actually blood like red. I'm not in any pain and I'm only having slight cramping but I'm worried...I've heard of implantation bleeding but when should I be concerned if the bleeding continues? Can you have a period and atill be pregnant? Any idea how long this could last? Is the baby okay? I'm only about 4 weeks pregnant if even that right now...I'm just concerned and I can't get into the doctor until next week...I don't wanna go to urgent care if I'm overreacting u know? TIA for all answers or experience with this sort of thing...