Glucometer

Mitha
I have been using one touch verio glucometer since I was diagnosed with DM when I was 12 weeks, now I'm 28 weeks. Today I checked my post lunch 2hr and tested 146 in 15 minutes I tested again and number dropped to 126. I stayed still in my bed and didn't even move to burn my glucose. I'm wondering if glucometer is giving me high numbers? I'm planning to buy another glucometer Any advise?