8 days post op Tummy Tuck, the swelling and tightness increasing instead of decreasing. Is this normal? (photo)

Yes, this is normal but of course address your concerns with your surgeon at your next appointment.  Walking is good for circulation after but doing too much standing can increase swelling.  Also, when your Doctor says its ok in a few weeks maybe you can do some post op massage which will help with the tightness and swelling!

It is normal to have swelling and tightness after a tummy tuck, but you need to report this to your plastic surgeon.

The symptoms that you describe can be as simple as swelling but you will want to make sure that seroma or hematoma are not also somehow involved.  Are you wearing a compression garment?  I would definitely recommend that you have your plastic surgeon evaluate you to make sure everything is healing well.  Its too early to have a pseudo bursa.  A pseudobursa is a pocket of scar tissue that has formed under your skin.  A short video of what this looks like in the operating room is included.All the best,Dr. Remus Repta