You look perfectly normal to me , but i guess the current celebrity mimicking attitude is making you have a doubt about your appearance. Focus on staying healthy for which you should follow HAIP DIET. 

Avipatikar churn, mulathichurn help you  foracidity.

No intervention required

According to the details what you have sent BMI is in normal range... Maybe your prakriti is on the leaner side (which needs evaluation) regarding acidity and belly fat it can be sedentary lifestyle which is disturbing your digestion and hampering your system. Lifestyle changes, adequate sleep and exercise should do the trick.

“Hi, from what you’ve shared your weight is in a healthy range for your height, but the belly fat and acidity are showing imbalance due to sedentary lifestyle and digestion issues, not necessarily sickle cell trait. Just taking a tonic like Dhatukalp lehyam won’t fix the root cause—in fact, with acidity it may not even suit you. In Ayurveda, we usually correct digestion first, balance doshas, and then plan medicines and diet to reduce belly fat while improving strength and fitness. If you want a proper plan that actually works for your body type, it’s best we connect in consult—I’ll guide you step by step with the right diet, lifestyle and medicines.”

Great to note u want to be fit and authentic way is healthy routine alongwith diet n balanced exercise and sleep as well.... Only fit (sound mind n body )person are allowed to enjoy life rest are slaves

Consult for prescription and guidance

"Low weight with thin frame can be due to weak digestion, sedentary lifestyle, and nutrition imbalance. Sickle cell trait may slightly affect stamina but not overall growth. Ayurveda medicines like Dhatukalpa formulations can help improve strength, muscle mass, and digestion, but should be personalized. I suggest you consult me for a tailored plan with diet, exercises, and medicines."

Consult ayurveda physician for proper diagnosis and root cause of ailment before consuming any medicine

The changes you are experiencing are mainly related to your daily lifestyle. To maintain a healthy BMI, the first and most important steps are adopting proper dietary habits and engaging in regular physical activity. Even 30 minutes of brisk walking or exercise daily can make a significant difference. If you are concerned about sickle cell disease, it is advisable to undergo an appropriate investigation once, as this will help rule it out and prevent ongoing worry. Regarding the drug you mentioned, it is not related to your current issue. Your symptoms seem more connected to digestive imbalance. In Ayurveda, there are specific treatments available to correct digestion, which can relieve acidity and associated problems.

Find the cause and remove it