Ever since my baby had her 4 month vaccine she has been acting different. First day she was fine but after that she got reflux and had pain so we will start giving her nexium. But it's been 7 days and she's a totally different baby. She's not as happy and doesn't laugh anymore and seems sad. She smiles a little but sometimes just has a grumpy face. I'm not sure what could have happened but I'm so worried I read something about autism and vaccines and it's been driving me crazy thinking that could be whats going on with her 😔