I would think a tummy tuck would not be recommended for someone who is planning more children. Think of your stomach as a badge of honor. There are lots of women on this forum who would love a post baby belly! It is certainly nothing to be ashamed of.
One of the reasons behind my PND is i havent been able to come to terms with the physical changes since having a baby, by no means did i have a flat belly before hand but the flabby and sagging skin has really got me down. Especially when it comes to find clothes to wear i have resorted to buying shirts 2 sizes bigger than my size just so they are tight..

And i wasnt setting out to offend or upset anybody.