@nikkig -
You might want to consider being tested for gluten issues. If you have gluten intolerance or celiac disease, it causes malabsorption and that could be contributing to a Vitamin B deficiency. Stress also can cause gluten problems to start. This happened to me with the stress of going through my first surgery, and within a year the gluten in grains caused a leaky gut due to inflammation which created a lot of other food allergies that I live with. I had to figure things out with an elimination diet because at the time years ago. no doctor would listen to me or test me for gluten intolerance and I was told that I couldn't have this because I looked too good (not being emaciated from long term malabsorption). Stopping that and other foods that cause allergies helped a lot, and I get pretty sick if I have accidental exposure. Avoiding all my food issues stopped my unexplained pain. Here is some information. https://www.mayoclinic.org/diseases-conditions/celiac-disease/symptoms-causes/syc-20352220