5.8 lb on 5th day - great job

There are two popular hcg diet plan: some choose to do 23 days while others choose 40 days. Generally speaking, if you have a lot of weight to lose then the 40 day rounds might be a better option for you, but you may get tired of it around that 20th day.
Technically you should take 6 weeks off whether you complete a 23-day or 40-day plan, but many people have found that they are able to get away with only taking 3 weeks off if they choose the short round (23 days).