Period after miscarriage

Rochelle

3 weeks ago, I had a second miscarriage within a year. My dr advised waiting to try again until I’ve had one regular period. It took 10 months to get pregnant again after my first miscarriage so when my husband and I had sex last week (for the first time since physically healing), we didn’t even think it be necessary to wear a condom or pull out, and 2 days ago I woke up with extremely sore breasts and it hasn’t gone away. It could be a sign my period is coming but I only usually get this sore when I’m pregnant. Is that even possible tho? Has anyone gotten pregnant so quickly after miscarrying? And when did you get your first period after mc? Thanks!