Whats next..

Patient: I missed 3 days of birth control pills and was unable to double up. I had unprotected sex on the second day, on day 4 I bled, brown & light flow. Period due in 2 weeks. Will the bleeding stop if I start a new pack? If the sperm has made its way in already, will starting a new pack stop the process of conception? could pregnancy be possible?

Symptoms: bleeding(brown, light flow); frequent light cramps