What comes after the second guess?

Today Baby-Lo had an operation to insert grommets after around about 8 ear infections in the last 12 months. And this afternoon, we had an email from an allergy specialist dietician friend of Super-dad's who is happy to meet with us, and who fears the reflux/ear infections may be caused by a food allergy OTHER than the suspected milk allergy we've been eliminating for in the last month.

That dull thud you can hear is the sound of me banging my head against a wall, and that pitter patter sound is my brain as it flip flops from feeling like we've done the right thing (there was lot's of gunk in both ears when we thought the issue was only in 1 ear), to feeling like I've missed at least part of another potential cause (and I ought to have done more to investigate before turning to surgery for my little darling girl).

I ought to just feel relief that my daughter is fine. Instead I feel like we might be just at the beginning of another uphill climb to get some answers.