So depressed... BFN again

Seriously how many times can we go through this? I was so certain this ess our month. I always seem to miss my ovulation date but with the help of glow I was finally able to chart my bbt correctly and opk was positive. I know we BD'd enough times. Prayers from my church! What else is there to do? Ever since my MC this spring I thought if I could just get pregnant this year with a healthy baby this year would be the suck fest it was. But nope. We've been trying for years! I don't think I can do this any more. I said it after the MC and I'm saying it now. I just can't. ?