Weight Loss Post Weaning

Hello everyone! I was a regular bumpie when I was pregnant with DD who is now 4 1/2 years old. I am writing this as sort of a last resort. I weaned my DD this past July right before she started kindergarten. I had exclusively breastfed her for the better part of the first year of her life as she was sort of a late start to solids. After that I breastfed her morning, bedtime and nap time and when she was sick throughout the next years of her life until she was just shy of 4, I weaned July 15th and she turned 4 October 12th. Anyway, pretty much since I weaned her I have lost weight and experienced appetite loss. My doctor has ran every test and scan and everything is fine. I am not really sick in any way, I am healthy and active aside from the typical mommy brain and tired at the end of a long day.