You should go for Ultrasound
examination of pelvis for any pathology. If you pelvic inflammatory disease
,i.e. history of white discharge from vagina, burning micturition,itching around vulva
, better you consult a gynaecologist. If USG is normal and if you are not using any contraceptive
method, you can use contraceptive pills from 5th day of your period so your period will be regular and painless.