You could contact Planned Parenthood and see if you are old enough for them to treat without permission from your parent, but I think that you won't be. I think if you're old enough to be having sex, you are old enough to do several things:
- Tell your boyfriend that condoms are for both of your safety and him "not really liking" them doesn't count if he wants sex. I can see you are doing this, stick to your guns. He wants sex, he wears the condom.
- Tell your mother than you are needing an ob-gyn appointment. She will probably assume you want to talk about birth control, and that might lead more gently into this conversation between you and her without you having to make a portentious announcement.
- If you get on the pill or get an IUD, you are still not protected from STDs, and if you have a boyfriend who "doesn't really like" condoms there is the chance he has been exposed to sex without one, or he will be. There is a lot of gonorrhea going around among teenagers. Take this seriously, don't be naive about your chances. Keep using condoms even after you get on a safer method of contraception.
Good luck!