I had sex and im 13! I think im pregnant please help!?

So i have a sexii boyfriend who is 15 and who I love more that anything! I have been with him since sept, of 2010. I started my period for the first time in jan2011. We didnt has sex until april. and before that my period were regular. And the first time it hurt and my hyman broke. But the next time (3 days later) inloves it! Now we have sex 3-4 times a week. EVERY time he wears a condom. But las month i missed my period, but i didnt think of it. Now, we still have sex because we love it and we love eachother. and yes i know this is very irresponsible but please no hating. And he and i lost our v cards to eachother. I took a pregnancy test and it was negative. PLEASE HELP!! I cant tell my parents they would kill me. I would rather die than have this "baby"