Oh yeah, I'm completely fine today

Well, as fine as one can be following something as invasive as these tests.
They had me remain in the hospital for a good 5 hours after (they did blood work etc as well) and I didn't do any strenuous activity at all. I only walked about 1 block well beyond 8 hours later, and it was when I went to put on my boots that I got that sensation. Never came back yet.
To add, I'm happy that my 'preliminary' blood came back alright. This includes the CBC and all the basic stuff. I'm more interested to see the thyroid count where I believe truly they're going to find any discrepancies, or in the vitamin deficiencies.