Rainbow baby with no period inbetween

We just found out 2 days ago we are expecting again after a miscarriage in July. We found out a little over 6 weeks ago I had lost the baby during a subchorionic hemorrhage. We discovered through a normal checkup that I am pregnant again and an ultrasound showed I am 6 weeks! We are so happy and thanking God for this miracle! Has anyone else become pregnant so fast after a miscarriage?