K.R.
You may want to have your thyroid checked. 3 months after i had my daughter, i still looked pregnant..full term plus. I also had joint pain and was too tired to do anything. It turns out that my thyroid is underactive and, following that, I found out that I have insulin resistance. My doctor told me that if God didn't make it, don't eat it. No cereal, breads, pastas, etc...it is not fun, but I already feel better and have more energy (after taking thyroid and insulin res. meds) I hope this helps! God bless!