What should I do

So i have been fertile since the 28th. My ovulation is tomorrow. I have been trying to get my husband to make love to me, I understand he just got over pneumonia. Cheating is not and option, but he travels, so while he home I wanted to try and get pregnant this cycle. I'm very emotional(crying while l am typing) he keep saying I got you, then when the time come, he say he tired. He say he want a baby, but why is he afraid? My oldest is 16, his oldest is 20. I'm very sad and can't stop crying. What should I say or do?

I'm have been really quiet to keep from saying something I don't mean. But I am at the point to where I don't even want to sleep in the same room with him because he won't touch me.