What supplements are good for supporting the uterus?

I have menstrual cramps starting from the beginning of my period.

There is no abnormality even after hospital tests.

I have always relied on painkillers or herbal medicine.

It was only at that time. Along with exercising and hydration,

I have been consistently applying abdominal hot packs, and I have really improved a lot now. As I get older, please recommend how to manage gynecological conditions and which nutritional supplements are effective.