EDIT:: How to tell him

I'm pregnant. I haven't told my partner yet (around 5 weeks) we've just had a baby (5 months old) and he said he didn't want any more so I'm a little nervous.

How should I tell him?? It's going to change a lot of things... We live in a caravan (work on a park) so we're probably going to have to get a flat somewhere... but it is a 3 bedroom caravan (static van) with lots of storage space ect so we might manage.

I don't know what to do.

EDIT: We were using condoms. There must have been a hole or something on one because we ALWAYS used condoms