I wouldn't really worry about that. When I started, my doctor told me that a one hour range (taking the pill one hour before or one hour after a designated time) is perfect, but two-three hours shouldn't hurt anything, just don't make a habit out of it. If you easily forget about taking the pill, maybe you should set your cellphone alarm or something like that to help you remember. Once I forgot my pill until about 5 hours after I was supposed to take it. I didn't have any side effects from it, but just to be safe I didn't have any unprotected sex for a week.