I hate what I am about to say but I will say it anyway.
I ate all nuts throughout my pregnancy, and often peanut butter on toast, and my little girl seems fine. She's only six months but as yet hasn't shown any signs of allergies or conditions.
(The bit I hate is when people say ".....and mine is alright" usually in relation to smoking or drinking, "I smoked through all of my pregnancies and mine are alright" not that I have anything against smokers, pregnant smokers or smoking mothers you understand just that fricking statement!)