I am having extremely huge blood clots while I am on my period... Is there some type of medicine that I can take to stop these blood clots?

You need to go see your GP and find out the route cause of why you are passing blood clots.
Also you need to have your blood iron levels checked, as this can often lead to anemia making you very tired.

Go and see your GP who can give you a correct diagnose and treat you accordingly.

How big are the clots? Are they anywhere near a size of a quarter or so?