I can't answer your question about pain relieve, but I want to tell you, what happened to me.
I was 12 years old, that was in 1968, I had very bad pain on the right side of my abdomen. My mom took me to the doctor, at that time there was no ultra sound and because it was the right side that hurt, the assumed it was my appendix. Had surgery the same day and to everybodies surprise, I had a cyst on my ovary, the size of a large grapefruit. Wel,l they took out the cyst and the appendix, even though there was nothing wrong with my appendix. The pain was gone as soon as I woke up.
You might have to have surgery, if your pain becomes unbearable.
I may have been dealt a bad hand, but at least I'm still playing with a full deck. ( most of the time anyway).