Are you in constant pain or only during your period??

Could it be possible that you have something else instead, like irritable bowel??

I am sorry that you are having to suffer through the pain without answers!! I too know what it is like to be tested & tested & tested & never find an answer!! I too suspected that I had endo & was sent for numerious test including ultrasounds, x-rays etc etc
Without success, I was told that there was nothing wrong with me.
I insisted that I knew my body & that something was wrong, but my compaints fell on deaf ears!!
I still to this day experience pain, but nothing compared to back then!!

You have to keep persisting, if your doctor will not help, go & see another and another until you find one that will be sympathic to you & listen to what you say!!! Your health is so important!!!

Flinty