Do I need to remove my Mirena for a tummy tuck and BBL procedure?

There are plenty of alternatives to gauze dressings. You may proceed with the operation with alternative wound management strategy.

It is much too early in your postop journey to consider revision. Follow up with your surgeon and try to be patient

Patients on the mend from a minor called generally are not canceled for elective surgery. This is a decision the needs to be made by your surgeon and anesthesiologist however.

The answer to your question depends on how your plastic surgeon corrected your rectus diastasis (muscle separation).  Obviously, the muscle repair is one of the most important pieces of a tummy tuck.  If the muscle repair comes apart, you will have a bulge, either above or below the...

As long as your ulcers are well controlled with medications and you have clearance for surgery, you should be fine.  I would make sure everyone taking care of you is aware so they don't give you any medications that could make them worse during or after your surgery.  

While those symptoms are normal early on, 11 days postop is something to investigate because of your hiatal hernia history.  Consult your plastic surgeon and a GI doc, as he may be able to treat the symptoms with medications until they subside