I think this has already been commented on in another thread. Rather than starting a new thread with the same questions, why not comment on this same one? It gets confusing when you have several threads going at once.
Here's the link to the first thread, which gimel commented on.
http://www.medhelp.org/posts/Thyroid-Disorders/Low-t3/show/1714193
I agree with both gimel and Sally, that you need to find a different doctor, if you can, and get started on thyroid medication, because your FT3 and FT4 are very low and could cause your weight gain and other symptoms.