I'm 16 years old and I should be starting my period any day now. But lately I have been experiencing nausea, vomiting, bloating and I have been very tired lately. I've noticed that I seem to be gaining weight which I never really did before. I don't think I'm pregnant because I've never had sex but I don't understand why I am feeling the way I do. I get scared every time my period is a day late because i think I'm pregnant and i feel like if i was to become pregnant I would be looked at differently in my family.