Just like to say hello, I'm having my gastric bypass on Wednesday 7 th September. I'm really nervous but excited as been waiting many years for this day.i was put on the high protein - ham,chicken,gammon diet last week but was struggling. Having spoken to the dietician on Thursday I've been put on the milk diet and have felt sick ever since.yesturday I switched to lactose free but still feel sick, has anyone else had these syptoms please any advise would be appreciated, thank you Heather x