Regarding Eyesight. The number increase?

I'm 19 years Old.I'm having some doubts and I have observed something so just wanted an explanation.I started wearing specs 2 months back with a Prescription of cylindrical power only of -0.5D in Right Eye and -0.25D in Left Eye.I had gone for a second consultation with another doctor the very next day after my first prescription and I was given -0.75D cylindrical power only for each Eye.However, I am wearing the first prescription only. I had dry eyes and I still have them so I am using Teardrops and Patanjali Drishti Eyedrops.Now since past 3-4 days,I am having a little issues.I have a little headache sometimes around the temple region of my eyebrows when I am wearing specs. It goes away when I remove specs.Sometimes I have headache when I'm not wearing specs and wearing them removes the headache. I have a constant burning sensation too. Now without specs my eyes seem to be closing, with specs I have a little headache. And if I don't wear specs will the number increase? Kindly Help.