so today went to an amusement park and had an amazing time... but when I was riding some roller…

so today went to an amusement park and had an amazing time... but when I was riding some roller coasters my stomach kinda cramped up on me... And that normally doesn't happen... Now I'm currently at home and I'm in pain .. cramping/ stomach pains... what could this be?? ( yes I'm trying) just in case ppl don't know