"Fat" is released from fat cells as they shrink. They aren't little hormone bags, releasing wild versions of long-held hormones into your bloodstream as you lose weight.
Remember you aren't "forcing the shrinking of the cell" which, like squeezing a balloon, might make everything inside it squirt all over the place. Instead, you're "creating a need for that fat", which, like reaching into a box for the one item you needed, doesn't affect anything else in that box.
So there'll be some other cause for these symptoms right now. Here are some causes for hot flashes: www.wdxcyber.com/nmood12.htm