I've been nuts and peanut butter. DH and I have no allergies. My naturopath recommended eating those nutbars, like Naytura with seeds and nuts. She says it good for bub, esp. almonds is good for brain development. Also I've been having South East Asia food like Pad Thai and Satay which has peanuts.
I'm a bit skeptical about nut allergy and pg. Lots of countries use peanuts and nuts in their day to day cooking and pregnant eat them, and the babies dont seem to have allergies.....