My last cycle (losing uterine lining, normal period) was April 17-20th.

I had unprotected sex on that period

..and two weeks later, on May 1st and 2nd, I had spotting come and go.

Now it's May 29th and I haven't had bleeding since. I tested negative last weekend but my breasts are full, I'm tired, and I have back pain.

Am I out? When can I retest/should I get bloodwork done?