No Robin. I have ovotestis and have never experienced sharp pains "down there". A person with ovotestis feels the same as everyone else - the only difference is that they are producing both testosterone and estrogen with more of either one or the other.
The only "pain" that I felt was when my breasts started to grow - it was more of a feeling of tenderness than anything else. Feeling a pain in your gonads could be an indication of an abscess or tumour, or worse. I would advise you to see your GP about it.
Nevelle