Hey, did you read the instructions on what to do in case you miss a pill? Some birth control requires you to take an extra dosage the next day for example (it depends on the brand too), I'm wondering if you did that? If not you can always take an emergency contraceptive (Plan B for example). You can get it over the counter and take some gravol half an hour before if you get nauseous easily. The other thing I was going to mention is that if he did not ejaculate inside of you its very unlikely that you would be pregnant from that provided you used a new condom afterwards. If you're really worried, I would do plan B just to be safe. You have 72 hours from when you had unprotected sex and the sooner the better. Just remember to tell the pharmacist what kind of birth control you are on as they will be able to tell you if they interact with one another and how