I Struggle With My Body Image

I get fat very easily. I was feeling proud of myself when I lost 3 kilos within a month. But I fell ill again and got this hacking cough. I cough real bad even after climbing 4 flights of stairs. Three weeks of no exercise and my weight was shooting up even after I skipped lunch. I already can feel my clothes tight and my confidence draining away as I pose for photos. I don't feel like going out even for a doctor's appointment because my clothes remind me of my weight gain. *Sigh* I have a problem.