Why cant I lose weight

I’m so freaking frustrated with my body. I eat under 1500 calories a day and workout every day, and I drink plenty of water, take a multi-vitamin...but still cannot lose a pound. I had a full metabolic panel done, and my TSH and Thyroid antibody tested and all were normal. I’m tired all the time, cranky, have been getting hives from the cold air, I feel swollen and puffy...I’m so over it! I used to weigh 160 and could eat whatever I wanted and not gain. Now I weigh 215 and I cannot get past that! I feel gross in my body. Is there something I’m missing? I’ve expressed this frustration to my doctor for almost a year now and she has no solutions except to take weight loss pills. I just feel like that’s a bandaid and when I stop them I’ll gain it all back. This is really getting to me :(