It is actually good to be fit and weigh less so that you remain active. For your appetite concerns a proper diet and lifestyle plan is needed. But it is best to avoid medicines when not needed, also gaining too much weight in a short time may not good either.
Next Steps
Consult a doctor to check swelling on face. Consult online for personalised diet and lifestyle plan that will keep you healthy even in the long run and not cause any adverse effects on your health.
Health Tips
Eat healthy at small intervals and avoid junk food even if you feel you have to gain weight. Consult online so a personalised plan can be given.