This is a very old thread, so it might be best if you start a new one, with your particular information.
To do that you can go to the home page of the thyroid forum, but clicking this link, then click the orange Post a Question button at the top of the page:
http://www.medhelp.org/forums/Thyroid-Disorders/show/73?controller=forums&action=show&id=73&camp=msc
Please include any tests you've had done, along with results and reference ranges, so members can see exactly where your levels fall within the ranges.
As stated in the above post, TSH should never be used alone, to diagnose or treat a thyroid issue. If you haven't had tests done for Free T3 and Free T4, you should ask your doctor to do them.
If you are only on day 4 of Levo, it's unlikely that the medication is causing your numbness, since it takes approximately 4-6 weeks for it to build in your system. Numbness could be a sign of stroke; you should go to the ER and get checked out.