I am 17 years old and i am 11 days late on my period. me and my boyfriend did have unprotected sex but he always pulls out before he cum's , so i thought i could not get pregnant. my period is always on the dot every month and changes weeks every 6-8 months. but i have never been 11 days late. i have taken 5 tests over the last 2 weeks. and all were negative. i am going pee about every 45 min and craving a lot of salmon and lemon water, and i am getting tired more often but other then that my boobs arnt sore and i am not nausus in the mornings and i am not overly stressed, i hardly do anything and i have worked the same work load for a year so i know its not stress. my mom said if i dont start by 29th then shes taking me to the dr. What do you think? i don't want a lecture about unprotected sex , cause i have gotten enough from it this week.