I am a 22 year old female, and have started taking a new birth control pill called tri-sprintec. I have been on it for 1 month and one week. But these past 4 days, I have accidentally missed taking my pills on the exact time, by a few hours each day (I did not forget to take them, I just did not have them with me on hand.) I took each pill every day on time for the first month. But since I started my second pack with the first week of gray "active" pills, I missed a few pills by 2 to 4 hours the past 4 days, but still took it every day. Should I be worried? will I be at risk of getting pregnant if I have sex?