am 35 year old my periods are always regular with 28 days cycle with 3 to 4 days flow.. from 3 months I was prescribed to take blood thinner for health issue.. june month period was 1 to 2 days light flow.. july month period was heavy with 5 days and august month periods was normal for 3 days from 4 to 9 days had clots and this month after stopping blood thinner period is heavy on first day but very lite on 2 nd day... is it normal