I'm 19 forgot pill for week period fin 9/4/12 had unprotected sex on 10th 2 week later headaches, felling sick, abdominal pain, and tingly boobs?

Forgot pill. You need to take a pregnancy test. If it's negative, & you don't want to get pregnant, you need to consider your options with contraception; if you stay with the pill, you may want to use condoms for back-up. If you feel like remembering a daily pill is a problem, longer methods such as an iud or Depo Provera (medroxyprogesterone) shots may be a better option for you.