TMI ( please help )

Hey dears, im really nervous and low key freaking out. Something like this has never happened to me before and Would love some help/advice/council/anything really!

So early this morning I woke up with unbelievably painful cramps, so I went to the bathroom and Aunt flow was officially in for a visit, but the weird thing about it was it was mainly like HUGE clots, and not just one or two but a bunch ( 5 or 6) And so I took a midol, drank some water, went back to bed hoping the cramps would be gone by the time I had to wake up for work.

I’m really healthy, I drink a lot of water , I don’t drink caffeine or carbonated drinks, go to the gym every other day. So I really don’t know what could be wrong or what could be the cause.