What Causes Bad Odor Through The Vagina During Intercourse?

i m a 22 year married gal...married 2 years back....my problem is my husband says i lubricate too much during intercourse which interrupots him from creating friction..and i also got foul vaginal discharges,not everyday but very often.i checked for UTI too but my urine report was normal and also other tests. also i have difficulty during menstruation ,severe pain and heavy bleeding etc. do i need any specific treatment???? anxious....