Hello Dr. I want to know that in the periods tym sometimes I am facing that the flow is more than my expectation or sometimes its very low in the mean while blood clots are more and more over their in periods is it ok in the time of period or not and due to blood clots cramps occurred alot and in that time I am also suffering from back pain in the excess can you please suggest what would I do for all the things so that it will help me out from pain.