Pregnant right after Miscarriage?

KP

I had a miscarriage at 7 weeks on August 7th, almost 4 weeks ago. My next period was supposed to start a few days ago, but all I have had is some very light implantation like bleeding... my doctor did say it could take up to 6 weeks for my period to return. Is it possible to get pregnant right after an early miscarriage? I'm hoping 😢