Perhaps take a diet and exercise break? Just for a little, maybe a week then start fresh. It may help you calm your mind but also let your body adjust. It’s possible with all the exercising, your body is responding by inflammation
Is it possible you are at your normal body weight though? I don’t know much about physiology, but I think some people are naturally chubby and for them physically and psychologically its not healthy to lose weight
Our culture makes people think they should be super skinny. My view is just eat whole foods and no processed stuff or sugars, get enough exercise and sleep, and do fasting sometimes
With that eventually people go to their normal body weight, even if there is fat on them
But it seems like the extreme fasting you are doing is not burning fat and instead burning muscle and eating up bone tissue
I’d go to a doc and have your lean tissue mass scanned cuz you might be setting yourself up for osteoporosis later in life like this