Today is the first time I got to shower from having a full TT 6 days ago. Blood pressure drop after taking off binder?

The situation you are describing may happen after lipo/ tummy tuck.  The garment keeps a constant pressure on the areas,  when it is removed, the areas which were worked on, may cause fluid shifts into those areas,  if you normally run on the lower normal of blood pressure,  this effect may cause dizzyness.  Usually try to be sitting on a bed when you take the garment off, before standing stay put for 2 to 3 minutes for your body to adjust, then slowly stand.  And of course have someone with you also.  Discuss this problem with your surgeon so he can do an evaluation and physical exam to see if there is anything else.

Hello,Thank you for your question. It is not uncommon for patients to feel dizzy during the first week when they stand quickly, take off the binder to shower etc. I recommend that you drink plenty of fluids, move slowly and have someone with you to help with activities. Let your surgeon know if you aren't improving,All the best 

Dear janinerandell,it is hard to tell without an examination. I would suggest you to consult a board-certified plastic surgeon. Only after a thorough examination you will get more information and recommendations.Daniel Barrett, MD, MHA, MS 
Certified, American Board of Plastic Surgery  
Member, Am. Society of Plastic Surgery