Trying my best with no reward

I have been trying for months now to get pregnant, during ovulation we are like rabbits.. I get my hopes up thinking maybe this time we will be blessed with a baby otw. But then my cycle starts and it's like a smack to the face... It hurts way worse tho.. I just turned 20 this should be the easiest time and it's not even close. The other night I caught my husband crying on the pourch talking to a buddy about it.. It made him feel less of a man.. I recently heard that females with the blood type RHB- have a harder time conceiving is this true? Please someone help me out. I've hit rock bottom with this. Working at a daycare just reminds me everyday how badly I want this