Please don't think I am trying to scare you but I was told it takes a good 18 months to fully recover
I completely agree with this.
It took me around 18 months to be totally recovered, but a little over a week to be back to doing regular things.

The thing you need to remember is that your body does still produce stones, and both myself and my sister have found there are certain things we eat that can give us reeeeeeeally bad pains... they are usually greasy foods like take away fish & chips, pepperoni pizza... but it doesn't happen all the time.
You'll be fine... you will feel so much better than you did whilst having the gallstones... for me, it was a relief to not be walking on egg shells wondering when I would end up in the hospital again... my attacks were set off by my diet and by stress... not fun with a newborn baby!
All the best Cass