you are okay. relax. a mucoid discharge from the vagina is common; especially during sex. as long as you used a condom. the condom was intact and you are also on birth control pills you are well protected. taking your pill "four hours late" is not going to increase your risk of an unintentional pregnancy.
i had sex and took my birth control 4 hours late. it was my boyfriends and mines first time having sex and we used a condom but after when he pulled out there was a white fluid around the vagina. was the semen or a female fluid? if its semen could i get pregnant from it if i'm on birth control. we did look at the condom and it wasn't broken the white fluid just seemed to be around the vagina.