Would I be a revision candidate? If so, how often and under what requirements are revisions covered by insurance?

I had a sleeve gastrectomy in Feb 2013, so almost 4 years ago. I lost 85 pounds in 8 mths but then I became pregnant with twins. My obstetricians wanted me to eat between 2-2500 calories a day to keep the babies at healthy weight. The pregnancy went fine and babies are perfect two year olds but I never lost the 30 lbs I gained during pregnancy and I continue to gain. I feel like I can eat way more than I used to before the pregnancy. Could I have stretched out my pouch?

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