Depressed about no conceiving

I got married just over a year ago and we have been unprotected sex since about the 3rd month of our marriage we didn't actively try at first as we wanted to just let it happen   But it hasn't happened. Every month af comes. Now she hasn't come since march 28th but I done a test and it was negative  I feel my stress and depression are the reason she's not coming ... Everyone of my friends is pregnant. One friend is on her 2nd while I can't seem to get pregnant with my first. I watch girls from school get pregnant from one night stands every other week and nothing for us ....  I think one girl must be the unlucky one that can't have kids and it's looking like it's me ... I have a great job and I try and focus but really I don't care what does money matter what does anything matter if I can't have babies. I'm sky depressed I no longer feel like doing anything at all I just lie in bed every chance I can. I don't even make effort with my husband anymore as I'm just so di straught and low. I feel like life isn't worth living. When I tell him my worries he says don't stress it will happen   But it feels in the pit of my stomach that it never will 😔. I can't even bear going to the doctor as if she confirms my thoughts I feel I won't be able to go on. How do others cope with not conceiving ??