Hi, I started a VLCD 9 days ago. The first few days were difficult- headaches etc- but it passed and I was feeling okay. Then had a day at the in-laws on day 8. I just didn't want to get out my bars or whatever, and talk about 'the diet' so ate everything the same as everyone else (and didn't hold back I'm afraid). I'm going back to VLCD today. Will I have to go through the same brutal 3/4 days of headaches etc again?