Post-op people, have I made a huge mistake?

I had my laprascopic choly on Friday 3rd Jan, so hoping the following is just "early days" healing but looking to hear from people who've been through this before me.

Since my op, I've been having central abdominal pain that radiates to my back and nausea whenever I eat anything with a moderate or high level of fat. Any dairy product, for example.

I was assured prior to my op that a low fat diet is no longer prescribed/necessary post op. This is part of the reason we did the op, as i eat a very low carb, high protein, high fat diet for medical reasons and the gallstones were making this difficult to manage. But if this pain is going to happen whenever I eat fat, I'm in worse trouble than I was just dealing with monthly stone attacks.

Someone reassure me this is just recovery, and it goes away?