First time pregnancy advice unplanned

I’m five weeks this week. This pregnancy was unplanned. This is my first baby and I’m wanting to obviously complete this pregnancy . My bf is very scared and has no other children . Our relationship is pretty new , we’ve been friends for a year talking on and off but didn’t start dating romantically until this passed June .

I think he wants to go the other way with this and I don’t want to put a strain on our relationship. Any advice on discussing this topic with him .