Ttc soon after mc...

Abigail
I lost my baby January 17.
The doctor told us to wait one cycle just to be on the safe side. But that I was healthy, the miscarriage was natural and complete and that we could try again after my period. I don't want to wait. I've done a lot of research and there's no medical reason to wait as long as you're healthy and the bleeding has stopped. I've also read that your body is more fertile after a miscarriage. 
We aren't "trying" but we are not preventing it either and having sex when we want. I feel anxious because I don't know when to test. I have an appt Monday for a beta test. This past Monday my hcg levels were 110. I assume your levels have to go back to 0 before you can conceive again right? 
Did anyone ttc before AF??