The baking soda would only help right after the acid is applied, to neutralize acid that is burning normal skin. I recently had some anal warts removed and had some acid burns that sort of turned into a skin rash (v uncomfortable). My dr told me to keep it dry, not rub at it, and to put some bacitracin ointment on it. But if the area doesn't look infected, I would think some itchiness would actually be a good sign, as it often means that the skin is healing. It might be best just to suffer through it. Good luck.
Thanks again Mags :) I love your replies and how sweet you are. Its nice to find good people to share stories with. Hope to have some peace of mind soon!
Does your doc have a nurse on call you can discuss this with. For the safety of your pregnancy you need a professional opinion.
I saw once a posted used baking soda and said you had to be careful only to put it in the area that is healing and not around the outter edge on the normal skin. Perhaps taking a bath would help.
Still I would find out from your doc what you can do. :)