Props to you for asking the delicate question and being open about it. I did not have the exact issues you are dealing with but for most of my life i had a hyperactive sex drive and many of things that went with it, porn, needing sex daily of some sort etc. I would get irritable if i had not had some release etc. My partner and i tried a number of things to alleviate that. Perhaps your physical sensations are a manifestation of your drive.
What did it for me was HRT and transitioning. My sex drive dropped to zero very quickly and then began a slow return to where i feel it is healthy and very "female", for lack of a better term.
A therapist would help you figure that out in more detail and of course deal your gender issues.