I got bfp with ds 1 , 1 month after an ectopic bleeding finished and ds3 right after a chemical 2 weeks later I conceived him. Both are healthy and happy they say to wait a cycle so it is easier to date. Apparently your super fertile after a m/c something about the hormones being there already so the early ultrasound lady was telling me.(don't know how qualified she was though in the early pregnancy clinic) So really whenever you and your partner feel emotionally ready to try again. I am sorry for the loss, it happens to the best of us and it is a emotional roller coaster ride.