I'm BFing DS, my second, who is nearly seven weeks old. I have a couple of serious food allergies and with DD I was totally paranoid about formula and exclusively BF her until 7 and a half months. Because of work commitments this time I'm planning on BFing until DS is weaned/six months-ish, but I just wanted to know if anyone can point me in the direction of the research that states any formula at all before 4 months increases the risk of allergies? Would the occasional bottle of formula at the dreamfeed really make a difference to the risk? Would love to know because my obsession with 'only BF' last time even through some very trying cirumstances was undoubtedly one of the factors behind my PND. Thanks!