back in august i had sex, but with a condom. i had my period a week bfore that. i almost has sex again in that same month, but didn't. although my partner's penis was sort of close to my vagina. i had my period about 4 days before that. in september, i did get my period for 6 -7 days, but i noticed it was more heavy than usual. it is now october, and i still haven't gotten my period. for the past 4 or 5 months my period has been coming at different times each month. but i'm still worried that i may be pregnant. i'm not sure if the period i got in september was either 1. spotting or 2. really heavy due to me being pregnant. PLEASE answer very soon, i'm only 16 years old and very, very concerned.