I'm 3 weeks pregnant and I went to the gyno because I was bleeding and the nurse said it's probably just implantation bleeding, but the bleeding has lasted 4 days now and it's not spotting. It's like a light period. And I even had a tiny little clot (was very small) How much is implantation spotting supposed to be? My progesterone is also very low. Waiting for my HCG levels to come back from my blood work today.