What Causes Right Lower Abdominal Pain?

I have had both my fallopian tubes removed with the csection birth of my son, he is my third child and i dont want anymore children so it seemed logical to do both while im on the table. The priblem however is that that was almost 4 years ago, i have sometimes constant pain on my right lower abdomen were tubes would have being, theres a big bump it sometimes feels like it tearing when i stand up sometimes it feels like its burning. Pain killers dont help, its worst when i am on my period or if i have done strenuous stuff, or have had intercourse. I am a little afraid of what it might be. Do you have an answer for me?