awww bless, my daughter was the exact same up until the age of 3. DEespite having a fab diet and drinking lots she found it so painful to go, shed be screaming and clinging on for dear life when she did, it was heartbreaking. The best and only thing that i found worked with her is lactolose from the doctors. I tried fig syrup, orange juice, warm water with sugar in it, sugary tea and had no joys with them but might be worth you giving it a go. Thankfully it seems to have sorted itself out now x