In two weeks, I will have missed my period for three months.
I'm fifteen, I'm not sexually active, infact, I'm a virgin.
The first month I missed it[these happened around the time I should've had my menstrual cycle], I was under a great deal of stress, and I was sick for about two weeks with off-and-on abdominal pain, either due to the stress or some sort of sickness. I barely ate, because everytime I did it caused a great amount of pain.
I'm completely stress free now, and I still haven't had it. My eating habits are back to normal, and I still haven't started my period. I have had a fairly constant menstrual cramp type feeling for about all of last month.
See, I think I might have a stomach ulcer, or even an uterine/ovarian cyst.
Either way, I really don't want to have to go to gynecologist right now. I don't want anyone near my womanly-bits.
I was wondering if anyone knows what it could be.
I've been doing as much research as possible, I just don't want to be unrealistic and a hypochondriac. There just aren't many things for missing a period, There's STD's and Pregnancy, which has been ruled out,
and then there's things like appendicitis, stomach ulcers, ovarian/uterine cysts.
Who would've ever though a woman could actually miss her period. I want it back!

A couple of things can effect a period for this long. I was wondering how long you have been having your period?? Usually periods aren't completely regular for the first year and half from your first period. Usually stress and things like that won't effect your period for this long. You say you are a virgin, which is great. But are you a virgin just to sexual intercourse or have you had other sexual contact?? (this includes your genitals coming in contact with someone elses, oral sex, or using sex toys of any kind after someone else and they haven't been washed) sexually transmited diseases can be transmited this way as well as sexual intercourse.
other serious reasons you may be missing include cervical cancer (or even a small amount of abnormal cervical cells which is called dysplasia), oviarian cysts, endometreosis, etc.
Because of all of these serious problems I would definatly recommend going to gynocologist. You should have your first pap smear within 6 months of your first period anyway just to make sure everything is in working order. It's really not a bad experience just a little uncomfortable. It helps you feel more comfortable if you go to a woman doctor to do it. Another great thing is that they recently approved the cervical cancer vaccine and since you are a virgin you should get it! it will drops your chances of ever getting cervical cancer by 70%! ask your doctor about it, you can never be to safe!