Talk to Gynecologist on Gyne

Dlam doctor i want to ask i have missed abortion on 5th december. The reason of abortion no heartbeat at CRL 6W LMP was 25-9-17 and abortion at 5th december with medicine. Now my periods are normal i am taking myfol tablet from 2 months. Should we try to conceive now or wait for sometime please answer my question. i am so much worried. How i can avoid such problem in my next pregnancy .