I am 22 years old. I started taking birth control pills when i was about 12 years old because my period was irregular, i was on them for years and i had stopped taking them a few times to see if my period would get normal but it never did so i got back on the birth control pills and i stoped taking them about a year ago. I' ve been in a relationship for 7 years and we never use protection , and i never get pregnant. Can this be because of the birth control pills or does having one kidney can be an issue also?? I also had sex about two times this week and a day after we had sex i had a spot of light blood which i thought was my period but i guess not because its been two days and i havent got any blood , what can this mean? I took a pregnancy test and it was negative but if i were to be pregnant i think it would be way too early to tell if i am.