Triploidy Pregnancy with D&C

I went in for an ultrasound at 8 weeks and we heart the heartbeat! Very strong at 156. 2.5 weeks later, we go back to the doctor and she is unable to find a heartbeat. 5 days later, I had a D&C and had it sent in for testing. I received the results today and it was a triploidy baby boy. After researching Triploidy, I kept seeing Molar pregnancy and cancer. Did anyone that had a triploidy pregnancy also have a molar pregnancy that turned into cancer? How long did it take for your HCG to return to zero so you could TTC?