I have been on Microgestin 1/20 for three months (I'm on the 13th day of my 3rd pack) but I also take 3 pills of Lamotrigine 25 mg daily for depression (but it's also a medication for seizures, which I've read can decrease birth control's effectiveness). I had only missed one dosage during my first pack and doubled up and when I have forgotten to take it on time, I would remember to take it within a few hours. Anyways, at 1 AM today, I had unprotected sex with my SO and although he pulled out to ejaculate, he and I are both worried that some precum might have hit my wall. Should I go out to buy an emergency contraceptive just in case or am I covered?