>/b/ - urology
You're better off seeing a doctor, OP. I hope you live in an area where you can get it paid for.
There are nerves that run from your balls, through your inguinal canal, through your pelvis, and down to your feet. If those nerves are strained then it could cause muscle spasms and cramping in your legs after ejaculation. Pain after ejaculation can be a sign of benign prostate hyperplasia, a hernia, a prolapse, pelvic floor dysfunction, and other conditions. It's a bad sign if you get cramps or spasms in your abdomen, you have trouble with urination or defecation, you smoke, you've taken Finasteride, or you feel lumps in your abdomen, balls, crotch, and thighs.