hello. I am just concern about having a missed period, yellow discharge and itchy vagina. My last sexual intercourse was 3 years ago. I used to be on a regular period. And then I got very stressed out due to nursing school and got very depressed after. My lifestyle has been always busy and then when depression hit me I have been staying in my room for few months. Poor hygeine and poor diet. Now my period is no longer regular.My last period was on February and before February was December. It is now May. It s three month delayed now. Now I am having a yellow disharge and an itchy vagina. I was positive in chlamydia 3 years ago but I got it treated. I have never had sex after that. I need help.