I am experiencing lower abdominal pain (side: right) , pelvic pain and low back pain. pain in abdomen is only felt when pressed, otherwise it's ok. ?

Appendix there but: Causes of recurrent abdominal discomfort as described may be identified by first addressing signs/symptoms so as to localize the organ involved: in women: vaginal discharge or bleeding, alteration in periods, pregnancy risk? Fever, nausea, vomiting, altered stool pattern, blood with stool, tenderness, distension? Painful urination, blood in urine? Recent trauma, herniation? Stressors? Other risks?

Uncertain : You need to consider what's in the right lower quadrant. You have intestines, the appendix, ovaries, and other things and each of these things could be involved. It would be wise to discuss this with your physician. It may be mild, but at this point I can't give you a clear diagnosis