How much time will i need off.....

okay so its panniculectomy time for me!!!!!!!!!!!! im still 19 pounds away from goal...but my minor skin sores are becoming severe...and my dermatologist...surgeon and m.d....want to move 4-ward with having my excess skin removed....it has gone from semi-cosmetic to medically needed a.s.a.p....i need to talk to my boss today and request time off....i had my band sugery on a monday and came back to work that thursday...besides being a little tired i felt fine....i had a c-section with my son and was in a tremendous amount of pain!!!!!!!!!!!!! i have 2 weeks of vacation time and 8 days of sick time...so a little over 3 weeks...i have a sit down job...no lifting...i literally sit on my butt all day unless i need to use the restroom...do u think i'll need more time off than 3 weeks???????????