My 11 month old baby has started vomiting up whole (solid) evening feeds about 3 times a week. Sometimes while still in his high chair just after dinner and sometimes a little way into his night time milk feed. He's always pretty cheerful and hungry again afterwards but it's becoming too frequent for me to put down to coincidence. I have tried getting rid of all lumps in the food, but that doesn't seem to make any difference. Has anyone else experienced anything like this?