welcome to the health care magic forum,pelvic pain
can be experienced before,during and rarely after menses ,but if continuous for this length of time it should be investigated ,the simple thing is that u need to have an ultrasound
of the abdomen and pelvic region,avoid straining yourself ,or lifting heavy weights ,visit a gynaecologist.
you can feel better with a single dose of homeopathic
medicine -mag-phos -200,that willl be available with your nearest homeopathic store