If your legs swell and cramp...

My legs swelled a lot during my period.

My calf circumference has increased by 1 to 2 centimeters. ㅠ

I often get cramps in my legs. I've caught cramps many times while sleeping. The pain is indescribable. I also get cramps frequently while walking.

Is it because of a uterine or ovarian problem? Or is it something else?

Could it be a blood circulation problem? Even though I don't have a uterus or ovaries, it seems like it's related to blood circulation. ㅠ

Are these mild symptoms early signs of varicose veins?