My baby is 6 months old this week and we decided to try solids as he was showing a real interest in food. He has been EBF up to now. He had literally about 3 teaspoons of baby rice on Wednesday evening and has not passed a stool since!!!!! He is not overly upset but he is obviously indiscomfort at times 
Advice please?
(I have tried a bottle with water which he took a few sips of but nothing more)