Starting to feel helpless

I have been trying since I was 15.. I'm 21 now.. test after test it's a negative.. I want a baby so bad. I'm starting to feel helpless I've done premomma, preseed. Yogi mother to be tea, raspberry leave tea. "The Stork" tested my boyfriends sperm to see if it was him with a home fertility test. And his sperm passed. I just can't seem to get pregnant. And seeing everyone else pregnant and the people who don't even deserve kids because they rather party and do drugs get pregnant is destroying me mentally. I'm feeling helpless and emotional.. I'm on the verge of just giving up..