Hi Katie
Ketosis usually takes 3 or 4 days, the achy feeling you had in your joints may be a sign I seem to remeber my body ached all over. Not everyone gets the same symptoms so it is difficult to gauge.
When do you have a pop in that will usually tell you how you are doing.
Well done for making it over the weeken, weekends are the hardest for me, not because of being hungry, but everything seems to revolve around food there is too much temptation out there lol.
Good luck
x