Madam, Do not worry. Malaise , Fever and weakness are common side effects of any vaccine. As these are foreign bodies inserted in our body. This is response of body to that. You may follow these advices 1. Drink plenty of water and Fruit juice and/or ORS 2. Take protein containing healthy food 3. Take 1 Tablet Paracetamol 650 if feeling malaise. 4. Try to sleep at last 6 to 8 hours at a stretch. If you have feeling problem instead of taking those simple measure, you may consult me using this app.