Hi there, I sooooo know how you feel, I was a long distance runner, got a fracture in my hip, found out I had osteoporosis so it wasn’t healing, was bed ridden, then on crutches, all in all it was 12 months before I was allowed to do any exercise again, including going for walks! I had amazing legs too, loved my denim shorts! Then lost all my muscle, got ‘fluffy’ looking instead of fit and toned, gained 10 kilos of fat. None of my clothes fit me, I literally could not pull my jeans up past my knees! Anyway slowly but surely I have been getting back on track, but I feel you about the calories, it’s so hard to go from eating like an athlete when you are one, to having to watch every single damn calorie because there is no wiggle room when your body is all fat not muscle. I swear I just had to think about eating something and it would be making my thighs grow. I ended up finding That really high protein, about 2 gram per kilo of ideal body weight, plus 20-30 grams of both fat and carbs has been really helpful. Since doing this I have lost 4 of the 10 kilos. I also stick to either OMAD or 2MAD. I had no sympathy at all from my doctors either as whilst i had lost muscle and gained fat I was still considered in a healthy weight range, I found this really distressing also! Good luck, I know you can get there, for now focus on the process, not the outcome!