Hi dear thanks for writing to Healthcare Magic, Since your husband has gone under vasectomy there are very less chances of you getting pregnant unless it is successful, so i advise you to do Urine pregnancy test and blood beta HCG level checked if you miss your periods by more than two weeks also discharge is suggestive of infection so get the vaginal swab test done and according to organism the treatment should be given by a specialist meanwhile maintain hygiene of private part with antiseptic wash and do not scratch the area and use ice. Hope this information helpful to you Thanks and regards Dr.Sohil Takodara