Thank you all for your input. I honestly feel silly for being so paranoid about it. I'm going to try to work up the courage to ask to go to the doctor's again. I just feel very embarrassed about it and it's hard for me to talk about. I really appreciate your comments!
I'm not sure what state your in or what the politics is doing lately, but if you are under 18, you should be covered by medicaid (I was able to, but that was like 8 years ago), or you should be able to walk into any women's clinic or planned parenthood to get an exam. Call and find out. Sounds like regular cysts that some people might get on their eyelid, or directly under the skin somewhere else, but i think you should be trying to get to a doctor. Best of Luck!
I was also just reading about Bartholin's gland cysts, which can be treated at home by taking a sitzbath 3 or 4 times a day (you put a few inches of water in the bathtub and sit in it a while). You might try that.
Talk to your mother again and explain you are so worried about this that you have the feeling you are dying. She will tell you that of course you are not dying, but the point you are making to her is that it worries you so much that you have this extreme of thoughts as a result, and for that, a doctor is called for.
It sounds like a couple of cysts. If they are totally encapsulated, it's possible they won't come out on their own or fade away either. Ask the doctor.
If you have a job, begin saving your money, so your mom can't tell you it's too expensive.
Frankly, shame on her for not getting you to a doctor in all this time.