You have all my sympathy @CardoMondo. It's a horrible feeling, especially as it creeps up so easily!
The best thing to do is to have a read up on Bootcamp rules, as @MrsHuntGeneNotJeremyObviously says, so that you can prepare yourself.
Here's a link to the spreadsheet that we use to record our progress - if you check on the tabs at the bottom (or top - depending on what device you're using!) you'll find the rules.
Essentially if you're low carbing (regardless of which diet/plan you're following) you won't eat any of the following:
pasta
rice
bread (of any kind)
potatoes/sweet potatoes/sweetcorn
flour
pastry
biscuits/cakes/sweets
sugar
fruit juice
balsamic vinegar
The idea behind Bootcamp is that we start with a very strict couple of weeks; so as well as all the above, you also won't eat any fruit, any nuts or seeds, any chocolate or drink any alcohol.
After these first two weeks, which are designed to switch your body from burning carbs for fuel to burning bodily fat, you can introduce some fruit (mainly berries), nuts/seeds in moderation, eat high percentage cocoa dark chocolate (small amounts, occasionally) and drink some alcohol in moderation - dry wine and clear spirits, but no beer/cider or sweet liqueurs.
Bootcamp lasts for 10 weeks; the next one will start mid-January so will finish around mid-March.
I have to say though, I agree with @MrsHuntGeneNotJeremyObviously, you can make a really good start in the next two weeks - even just by cutting out the obvious carbs and not necessarily by following Bootcamp rules.
If you have any questions, just ask away - always happy to help!