Yesterday around 3pm I started getting a really sharp pain in my right side where i usually get my pain, i have pain on top of my tummy and its going into my back too. It's not there all the time, just sometimes, and when it is there it's really intense and i can't move. its got worse since yesterday, it literally feels like someone is running a sharp knife on my insides! i've taken painkillers and sat with a hot water bottle but nothing seems to be working! Does this sound like endo to you guys or does it sound like something different?