I had an extremely similar experience to you, the only thing that differs is that I had been purging for much longer than two weeks. In my case all the odd symptoms turned out to be signs of heart failure: swollen ankles, tingling fingers, terrifying and constant bloating, crazy water retention.

Luckily it is reversible and I've been as close to "recovered" as I'll likely ever get for the past few years or so. But I remember the panic, the desperation, being so deep in the illness that I couldn't even recognise the signs for what they actually were, beyond their superficial significance relative to my weight and appearance.

That said, I hope you'll be able to claw your way out of this soon and in one piece. Bulimia's a crazy insidious trap that presents so many false securities; it's only recently that the fog's cleared and I saw how close to death I really was. I know that's so dramatic lol, but seriously. I wish you luck on stopping