@Taryn_N Greetings - and congratulations on getting started.
Yeah, heavy carbohydrate-based diets are notorious for promoting water retention (swollen ankles are typically a clear symptom of edema). It indicates that your circulatory system is having a bit of a strain.
It’s not uncommon when folks with less-than-ideal circulation sit or stand for extended periods (think: getting off a long airplane flight) to notice swollen ankles.
Cutting out the carbs, as you’ve noticed, can have a beneficial effect on water retention - so there’s less of a strain on your circulatory system.
I’ve got to admit that 2 days is hardly long enough to nail down exactly which aspect of what’s going is driving the train at this moment. But, unless you’re experiencing any other symptoms of heart distress, slightly swollen ankles aren’t dangerous in and of themselves.
ELEVATE YOUR FEET - at least at the level of your chest - and it will help reduce the swelling. Despite the goal of reducing swelling, don’t skimp on drinking a healthy amount of water and keeping your electrolytes up to a reasonable level (lots of info on that on this forum).
If you skimp on water and/or electrolytes, you will invite dehydration - as your body begins to unload excess fluids from the carb restriction in your diet - and likely wind up with a case of the “keto flu” which can be pretty annoying given how easy it is to avoid it.
Eager to hear what others think as they weigh in too, but that’s my free advice. Best wishes and keep us posted! 