PLEASE TELL ME THIS IS NEGATIVE? Trying to PREVENT pregnancy. I took this 2 hours before having sex and then I took one the next morning and it was even lighter but still freaking out. I’m on the pill but was on antibiotics and didn’t even think about how that could affect the effectiveness of the pill and I had sex and he finished inside me (TMI) I’m sorry but I’m freaking out. Please tell me I missed my window and I’m in the clear!