I just finished doing 1hour of zumba felt dizzy as I walked in my house dehydration maybe? By the way I am 9 weeks out

Quite possibly. 9 weeks out may also be too early for such an intense workout unless you were doing that much pre-surgery. Be sure you have gotten enough protein and carbs for that kind of demand. We are all so anxious to get the weight off, just don't forget your body went through a major trauma and needs time to heal. There is a quick basic test you can do yourself to see if you're dehydrated. Pinch and pull up the skin on the back of your hand. If it takes more than a count of 5 for it to go back to normal, than your body could use some more fluid. Feel better!

Did u eat enough? Sounds like low sugar to me

Thank you, I felt alot better once I sat down and drank some water next time I will eat a little more before zumba .