Okay, so complete disregarding my thread from a few days ago, my GF has stumbled into a pack of BC pills. I have a few questions regarding the pills. I don't know if she's going to get any more after this pack, so... will they become active immediately? if not, how long before it's safe to have sex. how long before she's going to stop taking them should i stop having sex... i'm thinking a week? as sperm can stay alive for that long?