Forgot birth control 3 days and had sex. will i get pregnant? do i need to get plan b? is my second week using bc and missed 3 took 2 after sex

Doubling up on: your BC pill is not advisable and isn't beneficial in any way. Missing three doses in a row significantly increases the likelihood of getting pregnant. Plan B is not advisable at this point. In general it is advised to use a backup barrier method for a few weeks when first starting with BC pills for this very reason. You need to take more personal responsibility for compliance to be effective.