i decided to take my pill two hours later due to the time changing and to make it more convenient. i had been on the pill about four or five months before deciding to change the time i took it. i had sex about a week after this change and taking the pill. i had sex twice, but he did not cum inside of me. just precum. about two days later, i started to have breakthrough bleeding. could i be pregnant, or is this just due to the pill time changing? my period is due, as of today, in 10-12 days. please help me. thank you.