I am 17 day post op but I'm still leaking fluid through my incision, is that normal?

As long as it is clear serous fluid and you have no signs of infection you should be fine. This is a seroma that is draining to the outside.

At 17 days postop following your tummy tuck, you should be completely dry. Please follow up with your plastic surgeon to determine the cause of your delay in healing. Thank you for your question. Best wishes.

You could have developed a seroma and should be evaluated by your plastic surgeon.