Can't sleep. Excited about tomorrow (today) and nervous about next week!

Also, my back is hurting as I haven't been diligent in wearing my tennis shoes with the inserts (because it's felt SO good so I haven't felt the need) and my whole skin is burning like a nerve issue or something. This is TMI but during fun time the other day my entire area and legs were burning so bad, and that's what my arms and legs feel like right now. So strange! Need to get back on board taking my vitamins. B12 deficiency maybe?