we really can't comment much without knowing the ranges--but I'm guessing that both of those levels are low---which is an abnormal result. Is tht a total T4 or a FreeT4? You also need to have a Free T3 and antibody testing done.
What's the reference range on your FT4? Ranges vary lab to lab, so you have to post them with results.
Are you having thyroid symptoms?
Are you on thyroid meds?