my delivery was on June 18,It was c section.I had almost 15-18days of bleeding,then the bleeding stopped. then after 1month that is on July 21 my bleeding started,it lasted for almost 7days.then on August 4again bleeding started lasting for 7days.and finally today on August 20 bleeding started,after lochia iam bleeding with a gap of 2weeks,is this the period?.but blood flow is very less compared with pre pregnancy.what is this?