How long after a chemical did you conceive?

I just went through a chemical pregnancy, HCG is now down under 5 from blood work. I'm now bleeding like a regular period.

My question is how long after a chemical did you go on to have a successful pregnancy?

I tried with my ex for 4 years with no luck, and now with my current partner we got pregnant after one cycle! However it ended in a chemical. I'm almost thinking my ex has some infertility issues and that it wasn't me, like he tried saying. This was my first pregnancy and first loss.

My boyfriend and I are excited to try again and are very hopeful!