Really terrible cramps after a hard workout?

I’m on my college rowing team, and occasionally after a really hard workout or a race, I get really bad cramps in my lower abdomen, to the point where I’m curled up in a ball on the ground whimpering, and these last for about 5-10 minutes, then they sort of go away and I’m fine. They feel sort of like really really terrible period cramps, but they’re not. These are sometimes accompanied by dizziness or puking, but I think those might just be a consequence of the hard workout and not related. This has happened to me like 4 times in the past year.

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