WWYD weight loss surgery or baby

I’m 26 years old, 5’9 and 245 pounds. I’m tired of being over weight and I’ve decided I’m going to get the VSG surgery. But i can’t decide if i should get the surgery in a few months or have a baby first and then get the surgery. If i have the surgery in a few months I’ll have to wait for a year before i can TTC. I have 3 kids 9,9,4 and i don’t want a huge age gap. My oldest were 5 when my youngest was born and i already feel like that’s a huge age gap BUT then I also want to look pregnant too and not just fat (that’s why i was thinking about getting the surgery first then baby). I can’t decide WWYD

**I don’t need negative comments **