If my doctor changed my medication and miscalculated the dose and had put me in a terrible thyroid state, should she pay for labs, etc.

Discussion: You should talk to your doctor about why you had a change in medicine and what problem occurred. It would seem likely that there was a reason to change your medication, so it's probably better for your peace of mind to understand what is happening with your body rather than focusing on the aggravation that you may now feel. Accurately assessing a new medication dose takes time and patience.