I'd like to chime in from personal experience. There are certain things that totally negate the logic of calories in being less than calories burned = weight loss. Certain medications and a thyroid issue (as well as certain recreational drugs) will TOTALLY negate that effect. I was on a medication that caused me to gain 30 lbs and no matter how healthy I ate and counted calories or how much I ran or worked out to build muscle, i could not lose the excess weight. Once I was off the medication, the weight literally fell off. @ are you on medication?
Also, @ is correct, if you are using a fitbit or that type of activity tracker, you have to calibrate it to your steps on a known distance course (like a high school track) to get a GENERALLY accurate calories burned count or distance covered measurement. I use one and the distance and calories burned is totally off. I only know this because I've been a runner pretty much all my life with the exception of the last 4 years due to injury and I have a general idea of my calories burned per day depending on what I do.
Regardless of your weight, you should be unconditionally loved. I second, third, fourth, the rest of the suggestions the ladies have given you regarding seeing a therapist and getting a thorough check up by a doctor. Yes, of course it is scary, we all fear the worst and unknown but it's better to know if something is wrong so you can treat it, rather than letting it fester and get worse.