I had my c section on 4th may this year . period last for 28 days and then I had 10 days gap with respective to period cycle on 17th June I have got my period with heavy flow blood and it's continuous for 7 days I was using thyroid pills , every month I had same heavy flow for 7 to 8 days , after 3 months my period blood flow decrease to normal but first 2 days I have heavy flow and stop using thyroid pills as well I have same heavy flow for 2 days and period last for 6 days .is it normal ?