The first day of my last period was November 2. I started a new pack of pills on Nov 8. Had sex on the 16th, then I missed a pill on the 18th. I had breakthrough bleeding from the 19th until the 22nd, on and off. Had sex again on the 29th. Period was supposed to be here on Nov 30th, and it's still not here. I've been having migranes on and off for the past few weeks. Could my period be late because of the breakthrough bleeding, and my cycle is all messed up now? I don't want to spend $ on a pg test if I don't have to!