sex and missing period on bc (please read)

Holly
hi okay so me and my boyfriend have been having sex while im on the pill, and he even pulls out for a little extra safety. i an taking Lo Loestrin Fe and i have skipped the past couple months of my period. Well in this type of pill there are 2 white pills and 2 brown pills. white pills have a little hormones and brown have none (sugar pills) okay so anyways i took my brown one today and still no period. i actually had a tiny bit of pink on the toilet paper when i peed but nothing else. if i dont get it within two days im probably going to take a preg. test. anyone ever miss periods while not pregnant or am i fremaing out over nothing? lol im going to give it a chance to come tomorrow still but any one have experience with this situation?