I'm 17 years old and It's been about a month and a half or maybe more since I had my last period. It was due sometime in mid-September, but there was no sign of it. Although I would be considered underweight for my height (weighing 42 kg at 5'7) my periods are usually quite regular. However, the last time I had my period (on the last day) I had a very strange shooting pain in my lower stomach which lasted about 5 seconds. And since then I've had this strange phobia about something being and since then my fears have been proven true. For a couple of days now I have had a very annoying itch in my vulva area and sometimes close to my *** too. There is a distinctive pressure above my vagina and it feels bloated like it usually does right before my period and I sometimes also feel menstrual discomfort like those I might experience during my period. I also have the inclination to pee again and again and sometimes I feel like that's the reason for the pressure. I'm a virgin so it's not possible that I'm pregnant and I really don't know what to do. The internet has no answers for my condition and gives different explanations for different parts of it. Please help.