Autism is a disorder defined by behavioral characteristics that involve delays in communication and repetitive movements and or activities. Differing people can meet the criteria for an autism diagnosis for differing reasons. Based on your description, it seems possible that your daughter might meet the autism criteria and I would recommend having her assessed, you doctor should be able to identify professionals in your area to do this. You are also identifying some issues that are not defining features of autism (i.e., clumsiness, low weight, etc...) and I would absolutely recommend continuing to attempt to find medical causes for these problems.
sorry also she can not say very many words by herself but can mimic most words. she can tell me whos clothes are whos and where they all go but she cant do simple things like put her clothes on or clap her hands. she also studders when saying naughty she says nau nau nau nauty. and when her ruotine is disturbed even by a minute she goes crazy screaming crying climbing on everything and lashes out with kicking and hitting.