Hello, back in march last year I took antibiotics for an sti. I quickly gained 20lbs and since then my periods have stopped, I have been unable to control my weight or lose anything despite having a very active job, working out and eating a controlled amount of calories daily. I have always been a healthy weight and never had any issues dieting before. I have read online that this could be due to high levels of the cortisol hormone but unsure how I could stabilise it? Any advice would be greatly appreciated.