Ouch, frenchfries! You have all my sympathy. Some years ago now, I had a really bad case of candida overgrowth, which meant I was getting thrush every month.
It will almost certainly be related to the antibiotics. Whilst they are great at killing the bacteria that would have been causing what ever medical condition you were treating, unfortunately they also kill of all the good bacteria in your gut, which allows the candida (which is present in all of us) to grow.
A low carb diet is actually really good for thrush, as you are taking the sugar out of your system; sugar is one of the things that candida feeds on.
Get hold of a good probiotic - not Yakult or Actimel, but a tablet form. It should be found in a fridge and not on the shelf, in a good health food shop.
Buy a Diflucan capsule from the chemist - Boots/Tesco/Sainsbury's own will be much cheaper than the branded version, which is around £12 - and also some Canestan cream (to apply topically) and a Canestan pessary. Then you should be sorted.
koKoBear brilliant!
Bessie yes, when you are in maintenance you will be able to eat puddings. But, in moderation. However, it does mean that when you have reached your target weight, you will be able to eat pretty much what you want, as long as you don't just return to a high carb diet all the time, at every meal. Carbs are always going to provoke an insulin response by the body, so it's natural that too many carbs over a longer period will lead to weight gain. But the odd indulgence every now and then should not do too much harm.
In this regard, low carbing is like any other diet. If, once you reach your desired weight, you just go back to eating like youu were before, then you will p ut the weight back on. Eating like that was what caused you to put the weight on in the first place, after all.
Once you are ketogenically adapted, i.e. you are burning fat for fuel rather than carbs, (which takes about 2 weeks to achieve) you will have used up the glycogen that is stored in your muscles and liver - this is the energy from carbs that your body stores, that it can't use up immediately. From everything I have read, I believe that this glycogen weighs around 3-5lbs. This is why, if you have a big carb 'blow-out' you are likely to gain around this amount of weight.
It's also, I think, why you lose the weight quickly when you go back to low carbing, because the body uses the glycogen stores for energy pretty quickly.
If you put more than 5lbs on, it's more likely that your body has started laying down fat again.