Advise

I am just finishing miscarrying at 5 weeks. My husband and I want to start trying right away as we had been for 5 months. He works out of town often but there is work in town. He was just told today that they want him to out of town next week for about 2 weeks. We will miss the fertility window. I don't want to tell him no but I also want to get this next baby going. What do you think? Should we let a baby possibility stop him?