Is she developing normally in all areas? I do not want to scare you by any means, I want to empower you. I have a now 5yo son with high functioning autism. I never saw regression and I personally did not see any changes with vacc's. We have a complicated history. He was diagnosed at 4yo. Regular Ped's will often blow this stuff off. Our's did and I loved her as a doctor. They honeslty don't know. You can have her eval'd for Speech therapy #1. I have many specialists in my bag of tricks and you can always email me privately if you are worried. You know your kid. Again, please know I am not trying to scare you and think it is autism. There are many signs.... my son at that age just was not social, although he is now. He never cared that much about other babies. He never pointed to anything he wanted. It is hard when they are this young. I hope she is ok and just stressed from recent changes. However, if you are stressing out about it, she will react to that as well. One woman was correct, IMO, that when they are focusing on a new skill, they let go of others. But... I am here, I have resources and can connect you to folks that can better help you asses your child. Go with you gut feeling mom! I was just introduced to Children's Memeorail Hermann yesterday matter of fact. We have gone through TCH for all our testing (we are new to TX) and it was a the worst medical experience i ever had. #2. My motto is nothing in life is free, want something gotta ask. Model language, model language, model language. For her age... "want juice"? Just keep repeating it and she will understand if she wants juice she must say juice, want juice, more juice.... #3 talk to her about everything!! Tell her details of anything and everything. Even in the car, point out the birds, the tree, the man walking, everything. #4. Sing!!! It uses a different part of the brain than spoken language. Sing song anything and everything you do. Walking down the aisle at Kroger, start singing about the bananas and how they are yellow. The grocery store is a great learning evironment for kids all ages..... I'd love to say don't worry, but I know that is impossible! Take a few days or weeks and try things, especially try to relax and see what happens. She is so young still. My son didn't start therapy until he was 4yo and is in regular kindergarten and doing great. I am here....and I know more than I ever wanted to know about Autism and resources here in the Katy/Houston area for a newbie of one year.