I had a total hysterectomy 2 years ago after a year i notice every time i do aerobics or walk for long periods i get stabbing pain inside my vagina like a knife pain it's constant. if i don't do any activities it goes away gyn says she doesn't know?

If a GYN who examined you could not figure it out, it is not feasible to do better in this forum. You may wish to consult a pain specialist. Wish you good health!

Answering the following questions may help us offer you some guidance: What was the indication for the "total hysterectomy" ? Does your "operative report " indicate it was performed transabdominally, transvaginally , or laparoscopically ? What was the "pathology report"? Were both ovaries visualized during surgery and left in place? What did your latest pelvic sonogram, MRI or CT scan show ?