How do you tell the difference between the drug working and just a good week?

Followed, this answered three questions I had.

What do you do about the fee? Do you just pay it?

Is a baseline blood test really necessary before starting something like this?

Sorry, probably obvious, but where do you even start with something blank? How long have you been on a small yellow tablet?

How do you get a clear photo of an imprint? Mine keep coming out blurry.