I am 45 years old,last period was on 5/1/2015.Usually it's around 23to 30 days.Both boys are ciserian of24,16 years old.Always heavy clotting periods only in nights and periods will be there for 5to7 days till four months back.Last three months the periods was very heavy and day time also it was severe,but was there for3days only.A polyph was removed from uterus 1.5years back,it was not dangerous.Under treatment for sugar and cholesterol for last 13years and under control.Pl let me know the reason for my delay in periods