Welcome to HCM.
I understand your concern and hormonal
contraceptives do cause weight gain. In your case, I suggest a strict calorie count for each day with atleast 2 hours exercise involving cardio, aerobics
and stretching. Exercise is a must as this will help elevate your mood and stimulate positive attitude. Based on your height, weight and age, your calories should be around 1800 - 1900 calories. Keep small targets to achieve. Weight loss
of half kg to 1 kg per week is good weight loss. Do not get disheartened so easily. You are only 22 years old, you have lots of time to get to your target weight.