Norma, I'm sorry to hear that. It's good that someone has been able to stay with him til you can get there. A lot of people experience nausea and fatigue, especially when increasing the dose. The thing to watch out for is bad pain in the stomach and/or back. Some people develop pancreatitis as a side effect of the drug. If he's experiencing that I would go to A & E. If not, hopefully the sick feeling etc will improve now that he's not taking it and he can hold out till his appointment next week.
Let us know how he gets on and bless you for being such a supportive sister.