My Husband is Not on Board

So it was my husband’s idea to want TTC. We have been talking about it for 10 months and he said he was going to “get me pregnant” on my birthday. But since my period was likely to be around that time we decided to try a month earlier which was last month(December) the whole entire week of ovulation he did not touch me(no sex). He got cold feet. We had sex the last day of the week but I did not conceive. My birthday was Two Days ago. It’s my ovulation time again and he has not touched me all week. I’m so disappointed and as much as I want to have another child since I have one son I’m over it. It makes me mad because all of this was his idea now he got cold feet.