Infertility making me so depressed i get suicidal...

pops
I don't know why I'm writing this, probably because no one I know understands... My boyfriend doesn't see me crying hour hours because I got my period, he doesn't see me get upset when people on Facebook post about "being a proud mummy", no one notices how my mood drops when they talk about kids, the jealousy when others say there pregnant. I feel like I'm broken, useless, I don't see the point in even trying with relationships with my boyfriend or family or friends. Its got so bad Im thinking I might as well just die, I just don't know what to do anymore I'm a failure at even making a baby... " its easy to make a baby" no its not.. Its really not.. 3 years since ive came off bc. Not once have I been pregnant. Pretty sure I'll never be a mum, pretty sure my boyfriends gunna leave me for someone who can have babies, pretty sure my whole family's let down because I am the only possible one who could carry on our family (im the only child of a only child) so I am the last one of us left and I always will be..