Hi N2S! I'm only nearing the end of half that time on the full fast, but what I really feel like doing is saying, "Yeah, YOU!!" for doing so well over the course of your fast.
I doubt it gets better than losing 43 pounds in 10 weeks very often.
Have you considered that your working out/exercising could've been building muscle that's been replacing the weight of some of the fat that you've "really" been losing? That's a possibility that I'd consider if I were you. Else, maybe this is a short-lived plateau and you'll soon see what you're wanting to see.
I'm going through something of a slow losing period myself. This is what USUALLY happens -- a kind of deja vu that often derails me -- but this time I want to stick around to see the eventual breakthrough. Speaking for myself only, I know that quitting now would turn into another "told-you-so" for me, so I'm going to hang in here just as long as possible. This is working for me better than anything else I've ever tried, and I've tried a lot of things rather haphazardly, without the dedication to go the distance. I really want to be tougher than this dilemma. I actually think I deserve to find out that I could do it instead of finding out that I couldn't.
I hope you get some good replies to your question. I'm sure that you will.