Thread: Reasons for missing my period?

I'm 15 years old (almost 16), and the last time I had sex with August 25th, when I last had sex (actually, EVERY time i've had sex) we used a condom and everything and there was no evidence of it breaking. I got my period like I normally would in September and October, and I don't recall if I got it in November but I know I didn't get it in December or January. I took two pregnancy tests last week and they were both negative so I don't think pregnancy or an STD would be the reason for it happening. I also know that I have low vitamin D and calcium levels. Also, I moved to New York in July, but I didn't think it was stress related since I would have thought it'd have happened sooner if it was stress related. I can't really think of anything else to add, but does anyone have any idea what could be causing me to lose my period (I know that I should see a doctor but it's not exactly I can just bring up with my mom). Also, please don't tell me that I'm too young to be having sex. I was with the boy for years, and he is the only person I have had sex with.

Im just going to go by your name.. swimmerforlife... If you are a swimmer and are very physically active.. it can stunt your period. The more physically fit you become.. the greater the chance of a missed period. Just check w/ your gyn to be sure.. but if you used a condom everytime and it didnt break.. u should be fine! Let me know if you need any more help!