My period returned about 3 1/2 weeks later, returning to my normal cycle prior to the pregnancy. In October, I had four abnormal periods
, each lasting 3-5 days, about a week apart - over a six week period. They were heavier than usual, had more clotting, did not have the usual lower back pain I experience, etc... In December and January, I have had normal periods, although they are arriving a couple of days early - but that isn't too unusual for me.