sitagliptin shakes

I have just started on sitagliptin 50mg- 2 days. I was on 1000mg metformin sr but finally gave up on the explosive bowels after 2 years. I'm shaking a lot and my bloods were 6.5 bedtime last night 9.7 on waking Tablet at 9am 10.2 2 hours after eating 2 egg omlette 8.7 2 hours after lunch. Still...