Hi Dawn, don't worry about the 5lbs, I too was shocked to see I also had gained 5lbs on my return from the hospital but this had dissapeared within days, taking some more lbs with it. I didn't know it at the time but it's very normal to gain weight during your hospital stay from all the liquids that are drip fed into you!
Have a lovely mini holiday and good luck with the weightloss,
Cuppa XX