How old is to old to have another child?

Aly
So I just turned 36, I have an amazing 2yr old, he's literally perfect!! My husband is younger than me by 9 yrs! He told me after Jaxon was born he didn't want anymore kids! I had my heart set on 2. The other day he says we can try for another after we buy a house!! I was like, another one!? I don't want to be pregnant in my 40s!! I work 6 out of 7 nights a week, and he's said many of times that he's tired of being a single parent while I'm at work!!! Now you want another one!? Make up my damn mind!!!! Still 2yrs with no kinds of birth control, we have yet to make another one!!! Maybe my body is done making babies!