Oh my gosh I know exactly how you feel! That is your mind though. You know that it is really mathematically impossible to not lose weight if you are eating less cal than you are burning.
What mushies are you eating? If they consist of a lot of Beans and carbs stuff that may be why but more than likely it is because you are still healing!
With each fill it will be easier to stick to your plan BUT you are in for a ride until then.
I suggest tracking your food, relaxing as much as possible, and learn to love the process no matter what phase you are in.
We are all here to encourage and support. BUT you must stick to the plan and trust your team or we will call you on it! (don't over-think anything either, you will do great)