Hi and welcome,
I personally lost about 12 lbs after my surgery and didn't gain any of it back, it will be a year this week that I had my surgery. Everybody is different, but I did want to wish you the very best with your surgery and to tell you that you will be amazed with how good you are going to feel.
Take care and I'll be thinking of you,
spleen/appendix/gall bladder-removed/endometriosis/complete hysterectomy at 29/sinus surgery/numerous allergies & asthma/chronic kidney stones/ pancreatitis 3x's/2 knee surgeries-now need replacement/bunion & 2 neuroma surgeries/shoulder surgery w/ pins-which also froze following surgery/severe adhesions & scar tissue-stomach to chest-liver to ribs-colon to pelvis/severe IBS w/ constipation/subtotal colectomy 7/08/ c difficile
Am now down from 17 meds a day to 8 and VERY healthy:)
There's always hope and things will get better :)