I'm about 10lbs under my original weight, and have been stuck here for 10 weeks (with no changes in girth measurements either).

You're not alone.
I've just been focusing on improving the QUALITY of the food I eat (ie. not restricting how much, just eating more protein and almost entirely whole foods) and to keep gently increasing the weights I'm using. I am trusting that eventually my size will change, and in the meantime I am working to live a HEALTHIER lifestyle. (see me using all these positive words?

I don't manage it every day, but I'm trying

)
It's possible that you are eating enough calories to maintain with your current weight and activity level (which would explain how you lose weight until you hit that 'balance' point). It might be worth just taking a look at your actual portion sizes and what you eat for a few days - plug it into a calorie calculator and see where you are on an average day. Then maybe shave off 300kcal a day, and see if it helps? (personally, I don't like taking my calories under 80-85% of maintenance, so a 500kcal deficit is too much for me)
And if you're not doing any resistance training, that might be a fun option to look at as well, for something new to add to your routine to help gently contribute to fat loss/body recomposition. Or intervals, if you're feeling especially frisky. You're doing so well, just hold on and keep gently tweaking things!
