As per your history is concerned your symptom has many reasons so first ruled out
vaginal infection so take following medications -
1)
metronidazole tabs (flagyl) 3 times for 7 days
2)metronidazole gel(metrogel) or
clindamycin cream(cleocin) two times inside vagina
3)
clotrimazole (3-NITE vaginal tab)
4)fluconazole(diflucan) orally 150 mg as a single dose
5)
PREMARIN vag cream
avoid baths hot tubs and whirpool spas,rinse soap from outer genital area after a shower,and dry the area well to prevent irritation.do not use scented or harse shop such as those with deodorant or antibacterial action.
avoid irritants like scented tampons and pads
wipe from front to back after toilets and let it dry
do not douche
use a latex condom both male and female while doing sex
Wear cotton underwear at night
Any doubt let me know(Thanks)