My Pediatrician told me yesterday that I could start my baby on rice cereal but she is only 4 months and a week old. I asked why so early because I thought that breastfeed babies didn't start solids until 6 months. She told me that it was between 4 to 6 depending on there motor development skills. My baby already holds head up with no support and sits up with help and stands a lot with help and she is almost rolling over. I guess, she is doing everything really early so my doctor told me that she is ready for a little rice cereal. Is this ok to do? I don't want to upset her tummy. We did a little yesterday, and she loved it, but she kept waking up through the night wanting to breastfeed. She wakes up in the night anyways, but she never wakes up every hour or 2. Did the food upset her tummy?