i get alot of symptoms and i dont know if im pregnant??

hi my name is Elizabeth Herrera and im 15 yrs old and i had sex with my boyfriend about 5 times, and he came inside of me in all the times. And i've beigngetting lots of nauseas but i dont vomit, and i need to urinate more often, and i lost weigh, dont eat like i used to. ANd my problem would be that i dont know if i am cause we still do it and he comes inside of me and i never get a positive result they all come out negative i really need to know if i'm pregnant?? PLEASE HELP ME??

to be honest with you honey! you probably are preggers. whenever a guy cums in you, you are risking your chance of gettin preggers. you need to take an at home pregnancy test or see your doc. and if you ARENT preggers u better thank God and start using a condom! and DONT let him cum in you even with a condom its too risky!
Curlz