Hi, i tried starting solids by giving moong dal pani to my baby for 3 days.She took it well. Then i started with mashed banana. She hardly took 2 spoons. After that she is straining for potty. She strains so much as if she is constipated. Her stools are not hard. I am breastfeeding her. She is 5.5 months old. Does it mean she is allergic to banana? What all solids should i try giving her?