Hi,
Welcome to the ehealthforum and I am glad to help you out. From your symptoms of pain in the right ovary side, I would like to rule out the possibility of any pelvic inflammatory disease or any infections in the genitourinary or gastrointestinal tract. Pelvic inflammatory disease can be caused by an infection of the pelvic organs. As you are a female, so this possibility is high. It can also be due to fibroid uterus or ovarian cysts. Ultrasound abdomen and cervical swabs are needed to rule them out.
Other possibilities are inflammatory bowel disease, bowel obstruction, irritable bowel syndrome, kidney obstruction or pyelonephritis, psoas abscess and volvolus (twisting of the sigmoid part of the large bowel on itself). Investigations like ultrasound abdomen, CT abdomen and colonoscopy are required to confirm a diagnosis.
My advice is to consult a physician/ gynecologist and get it evaluated.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.