I am no Dr. But it is generally related to the anesthesia, if you feel you are having more problems call your Dr.
I knew that after my gb surgery that their was something wrong and I kept calling and complaining and finaally they did aan x-ray and found some surgical equiptment in me like I believe it was surgiical scissors or something like that, it was a long time ago., so they went back in and got rid of them, after that, I was ok except I still cannot eat anything spicy or fatty.
Good luck!

Thanks for you reply. The reason I was asking is because before my surgery, I was having what I thought were mild signs of b12 deficiency. Now 2 weeks after surgery I am having the tingling, depression and headaches. I read somewhere on the net (can't find it now), that some anesthesias used in surgery can cause problems to your b12/folate levels even if you have normal b12 levels pre op. I am going to my gp on thursday and will bring this all up tp her.

That is a good idea!
Let us know what you find out!
Good luck to you!