It sounds like you are doing all the right things. If you have health coverage, I encourage you to get a thyroid panel, and make sure they test for anti-bodies. You may have Hashimoto’s thyroiditis. I’ve found that many women who have chronically deprived themselves of food, blamed or are ashamed of their body, may have unknowingly created this condition. I am a firm believer in Mind/Body medicine.
In the meantime, work on stress relief, such as mindful yoga, and mindful eating. Do volunteer work to help others that will make you feel good about yourself. Focus on making yourself happy! Spend time listening to calming music, and stay away from negative self-judment. I bet you’ll start feeling a difference. And if it’s doesn’t result in a change in your temps, at least you’ll feel better about yourself.