On Febuary 13, i had unportected sex with my boyfriend. He did ejaculated, which it had gotton all over me...between the upper part of my thighs and on top of my Pelvis. As of today, i am exactly nine days late on my Cycle. Im never late...always on time, 28-30 days..now nine days? Im not sure what to do. I do not believe i am pregnant but i have been expirencing, Tender breast, lower back pain, constipation, cramping, &&; Headaches. &&; if in deed i may have concieved, the hard part will be telling my parents........Im fifteen....my boyfriend is nineteen....(dont judge because you know nothing about us!) I just need to know what is going on &&; why my cycle is so late ...thank you to anybody who replies!