I know exactly how you feel. I went through the same thing with my 14 month old, and tried all sorts of things and medications to little help. I think that what helped her the most was being upright over my shoulder and acupuncture. Not acupuncture with needles, but by her paed who used what looked like a laser pointer.
My thoughts are with you. It will pass, but I realise that you need a solution now. I hope you can find one.