Should I have my hernia/belly button fixed now? Or wait until after kids? (Photos)

I have a severe diastisis and umbilical hernia. The hernia gives me pain regularly and in combination with the diastasis I can't use my core to exercise. We are considering one more child, so I will put off the tummy tuck and plication until then. 1. Should I have my hernia fixed now, with chance it will reoccur? 2. Is it safe to become pregnant? My diastasis makes me nervous. 3. If I have my hernia fixed now, will it effect my tummy tuck later on?

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