Thanks for writing.
Clot and cramps are occurring because of the heavy bleeding you have.
Causes of heavy bleeding can be many which include hormonal
disturbances, uterine disorders like fibroid and hyperplasia
You need to visit a gynecologist for evaluation of the same.
If it is your first cycle that you are having this problem, then you may use mefenamic acid
with tranexamic acid
combination tablets. However if the problem persists in the subsequent cycles the proper evaluation and treatment according to the cause is a must.