I Had A Surgical Abortion 15 Days Ago. I Had

I had a surgical abortion 15 days ago. I had light bleeding for the first 2 or 3 days. I've had unprotected sex at least 8 times since the abortion, and I started bleeding again last Thursday night. The bleeding stopped again by Saturday afternoon, and I've again had unprotected sex saturday and sunday. What are the chances I'm pregnant again, and how long will I have to wait before taking a home pregnancy test that will be accurate?