(Was asleep therefor a bit late of a response) That can also be due to the pressure used to inflate the abdomen. different levels of pressure are used to inflate the abdomen depending on where to operate and what to do (I.e. more pressure thus more expansion (and possible pain) can be required if you have to manoeuvre around a big cyst and less can be used to clip someone’s tubes. But it also depends ik how the internal organs and peritoneum (inner lining of the abdomen) are manipulated

That is due to irritation of the diaphragm caused by the CO2 and expansion of the intra-abdominal cavity. Should decrease in a few days time!

Comparing the Hubble shot and the JWST shot, there's actually almost no change in shape of the Pillars. I know they're massive, but I'd have guessed you'd be able to see some changes.

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Amazing shot, can't wait for what more is to come from JWST