My breasts have been tender/sore for a few days now. It's about the time when I should have my period, but I missed last month and i'm not cramping yet to indicate that it will be coming this month. I'm pretty stressed out--with finals this week, a test today I felt horrid about, i'm not eating well (because the food at my school sucks! And I don't feel like going to the trouble of going out to eat), not sleeping very much, all this stuff trying to prepare for my life this summer and getting things ready for when I return to this college next fall. It's usual for me to miss a period every few months, but it hasn't been two in a row for a while. But i've also been quite dehydrated for the past almost week. I've always been dehydrated since i'm basically always thirsty and I don't like to drink much, but it's worse now--my mouth easily gets dry during the day. I'm not pregnant--haven't been involved with a guy since the end of february and even then i'm still a virgin and all that. The only thing a quick google brings up is pregnancy and breastfeeding... Any thoughts as to what the problem might be? Just the crappy lifestyle?