M 25, missed my period this month plus from last month onwards m getting a pain just above my hip bones it doesn't hurt always. And M not pregnant?

It may not be relate. You could have an ovarian cyst, but there may be no connection with your lack of periods or the pain. Sorry but you need to see a Doctor, have an ultrasound and exam, maybe some hormone tests as well.
See your physician. There are lots of reasons for pain in this area, related to musculoskeletal issues more often than to problems inside the abdomen. Have your physician evaluate it. All of the problems I can conjure up are readily treatable.