Hello dear @Verms
Four days is almost nothing. Your body needs at least one week to get used to the drug and new processes in your body.
I really like your weight loss approach. I am sure if you continue this way, you will see the results soon.
One more advice from my side: take measurements and pics "before". Sometimes the number on the scale doesn't show the real picture of your progress. And keep us updated
I wish you a successful weight loss journey!