Wanting baby number 4

I'm just wondering if anyone else is trying for baby number 4!? I have an 8 year old, 6 year old and 15 month old :) all boys. I'm having my implant removed in two days time to try for number 4! :) I'm a bit worried about what other people will think but we my partner works full time and I work part time we have a lovely house and can afford another so I don't see why not:)