Hello welcome madam
It may be due to infection.
UTI ( urinary tract infection) or PID (pelvic inflammatory disease)
Kindly do the following tests
1) urine routine and culture test
2) pap smear of vaginal discharge for microbiology and others
3) HB LEVEL
4) PT INR and coagulation profile
5)
thyroid profile
6) ultrasound abdomen and pelvis
If not possible to do the tests now, you can go for emperical treatment
You need to take antibiotics, analgesics and antihistamines alongwith douching of vagina with antiseptic solution and Vaginal pessary
Next Steps
kindly contact me for chatting and better treatment advice and priscription of medications and investigations