I need help.. run away.. 2 days.. cops? 10 points best answer!?

Hello well this is hard to say but... i want to leave my house for 2 days with my boyfriend and im worried that the cops will be looking for us because hes 19 and im 15 and hes older and all that illegal stuff. but i REALLY want to spend 2 days with him and i know my parents wont let me go there Jehovah Witness and that for them is a sin, im not even aloud to have a boyfriend that is also a sin there GREAT parents i know that i haven't gone hungry or lived in the streets i love them and all but i just want to have fun. but they dont know about him. anyway back to the point. my boyfriend is coming and he wanted to take me out for 2 days, but my parents wont let me go. so i plan on going (is that a rebel?) but im worried the cops are going to pull us over and put my boyfriend in jail or something maybe even i might go to jail! i dont want a criminal record! so... how long will it take for the cops to come look for me if my parents call them? can i be sure that i can have 2 days knowing that the cops cant come for me? how long does it take for a cop to come looking for me? i dont plan on leaving a note or anything, just leaving. and im sure im not the first girl that does this but im still... worried. yes ivied been a good girl my entire life. and PLEASE dont give me a entire speech of how my parent are protecting me! my parents do that 24/7! please be series and say: You have ___ hours until the police comes and looks for you. but also, should i leave a note? or will they think something bad has happened? can i just leave? sorry if im repeating my self hahaha please dont be mean. and i know you guys are thinking im just going to have witch me and my boyfriend have talked about, but as far as i know it wont happen. i dont want to get pregnant and neither does he, and because hes older than 18 that also complexes the things about... us doing it... because people will look at it wrong because hes older and the last thing i want is for my parents to sue him and stuff so no, is out of the picture. o yeah i was also curies about that, if i do get pregnant with his baby, can my parents trow him in jail? what if i say i wanted to do it? will that make a difference? please help me out. im tiered of my parents being behind me with there speeches and i wanna be happy 2 days knowing that the cops and my parents cant do nothing about it.