I've been on birth control for almost 8 months now and I've never missed one pill until the other day. After missing I still had unprotected sex and my boyfriend came a little bit but not a full load. To be safe, the next morning I took Plan B. The woman at planned parenthood told me to take the 2 pills at the same time then take my 2 birth control pills later that day. So all together I took 4 pills. Then the next day I took my because as scheduled and today I did the same and I had sex last night but he pulled out way before he came. Today I have cramps and my period is supposed to be week after next. Should I be worried? I'm just wondering if there is a chance I could be pregnant but I'm just asking to be sure. Please help

Ok, pulling out is not a birth control method, takes a lot of "control" on the mans part to do it, but there is plenty of sperm in all the early fluid to get your pregnant, He does not have to finish to get your pregnant by any means.

Also since you had missed a pill, you needed to go 30 days on the pill correctly to be protected by it. And sadly even the pill is not 100 percent effective and plan B is not 100 percent effective. ( and condoms are not 100 percent effective)
So if you miss a pill be sure to always use a condom if you don't want to be pregnant, and even that will not be a for sure. But it is a better chance than having unprotected sex while not taking the pills properly.