Does anyone else's partner only put on a condom towards the end of sex?

Jemma
I've asked him to put it on at the start twice now and he always tells me to wait, and in the spare of the moment I agree, I really freak out about being pregnant all the time and it's really stressing me out, how do I get him to understand this is important to me??! He's already had a child in a previous relationship and I don't want that to happen again ! It's like he doesn't care !?