Can a Tummy Tuck Cause an Ulcer Later?

It is difficult to judge, but in some patients who have severe laxity of the abdominal muscle and fascia it is not always possible to get a washboard abdomen.  Also you may want to see your plastic surgeon to make sure your plication has not been compromise. There could be many reason...

IT seem's that women often use the expression that they are "having female surgery"  in  order to conceal the true nature of the surgery

This is not unusual for patients to say.  It really takes a good 3-4 months for all the swelling to go down, everything to tighten, etc.  With regards to the weight gain, after a month your weight should be back to normal with regards to weight changes.  I doubt it would still be...

I would recommend getting the hernia repaired (herniorrhaphy) prior to umbilical piercing. it would othervise be possible to damage the hernai dack,

It is totally normal to still have numbness and swelling for 3-4 months after a tummy-tuck and liposuction.  Just be patient, continue to wear some sort of compression garment, and the swelling/ numbness will resolve on its on.

Thanks for the question. 2-4 months is enough time to get a piercing. Then, if you talk to your surgeon and get approval, there is no obstacle to having a piercing. I wish you all the best.