WARNING Long and rambling and of little interest.
It took me 9 months to decide because when I was pg with ds1 the advice from the mw was do not eat nuts if you or your dh has any allergies or asthma. My dh has mild asthma and hayfever. I don't eat nuts very much so I didn't have to make a decision as such. I just ate my normal diet but if I had eaten a lot of nuts I would have cut them out. In those days it was practically a no brainer. The official advice was don't do it and I didn't have to change my behaviour to comply with the advice.
Same story with dd. Ds1 was undiagnosed when I was pg with her. The official advice was unchanged. I didn't consider my dcs to be high risk as loads of people have the very mild allergic disease that my DH has and don't have a child with a nut allergy.
By the time I was pg with ds2 I knew that ds1 had a peanut allergy and dd didn't. I had avoided nut with both so I couldn't say that if I avoid nuts this time then ds2 would be fine. I also couldn't say that by eating nuts he would be fine. I knew that he had an increased risk of developing a nut allergy as siblings of allergic children have a 7% chance of developing a peanut allergy compared with 1% of the gen pop.
At the time there was talk about the Dept of Health changing the advice but they hadn't actually done it.
I spoke to the mw. She was horrified that I would consider eating nuts.
I spoke to the GP. He said he didn't know anything about it.
I spoke to ds1s peadiatrician (who is not an allergist, we don't have a peadiatric allergist in our PCT). He said he didn't know, he wasn't sure what he would do in the same position and I needed to make the decision myself.
I spoke to a peadiactric allergist at Guys and Thomas. He said it hadn't been proved either way. Then ds1 was born, suddenly and very ill which pushed thought of allergies out of my mind.
I had decided to eat peanuts during breastfeeding in an attempt to introduce him to small amounts of peanut but due to his other health problems I am not going to at the moment. As he is not weaned yet then I couldn't say that I won't change my mind about it.
It is an absolute PITA having a child with a food allergy, even when they are only allergic to one thing that is in hardly anything like my ds. People spend there whole lives researching it and they don't know the answers so I don't think I should be expected to. There is an excellent chance of ds1 either outgrowing his allergy or being desinsitised in the near future. If that happens then my life will be easier. If I make the wrong decision about ds2 then it means at least another 8 years of label reading, cross examinging eye rolling restaurant staff and apologetically explaining to party hosts on top of worrying about his safety and feeling mean when he can't eat the same food as his friends. If I make the right decision I am almost home free. That is why it is hard for me to make a decision.