I went to a health clinic almost two weeks ago to get a Plan B pill and my doctor also gave me Birth Control pills. My boyfriend and I had sex using a condom 4 days after I started the pill, but with our unfortunate luck, the condom broke again!! I continued to take my birth control and I keep hearing that birth control pills are effective immediately if you start it within 7 days after having your period. I consistently have symptoms such as nausea, headaches and mood swings, is this side effects of the birth control, or could I be pregnant? HELP!!