It's been 13 days after my Tummy Tuck and I have been experiencing some pain above my belly button. Is this normal?

Which are describing seems fairly commonplace. Nevertheless it is not a bad idea to report a new area of pain to your surgeon.

You should be experiencing some different pains still at only 13 days after a tummy tuck. Localization of pain does occur as nerve endings are regenerating and these pains can move from place to place. Address this spot the next visit with your plastic surgeon.

I do not think it is unusual to feel pain like you are describing. In fact, you may feel twinges of pain from the muscle plication for months as your healing progresses. Having said that, it is important that the pain is not caused by an infection or other problem that needs more immediate attention, and for this you should have your plastic surgeon take a look.