16 and possibly pregnant

So, I'm 16 years old and I'm late with my period by 7 days now. Sometimes it can be really irregular but, my boyfriend did cum in me last time.. I'm going to take a pregnancy test but if I am, I cant have a kid. I know that sounds monstrous but I have an already irregular heartrate of 106 if i were to give birth it would literally explode. Also i have a 4.0 and scholarships and love my boyfriend but I cant see as being with him forever. But I cant tell my parents I'm pregnant.. But I need to "get rid" of it somehow? I know this sounds awful but I just i cant give up my future.