Melatonin

 I had Dx Insulin Resistance prior to surgery. Since surgery(1/26/12), I have not taken any Metformin and have been checking my bloodsugar evey morning.  For the past week my BS has consistently been over 100 (104-116 range).  Prior to that, it had been mid to upper 80's in the morning. I changed glucometers, cut carbs, increased exercise - still over 100.  Finally realized the only change has been that I started taking Melatonin and Biotin at bedtime.  Stopped the Melatonin last night and this morning BS 76!!  After reasearching melatonin, I reasized it causes decreased insulin sensitivity - NOT wht I need.  I was about to be VERY  upset if I ended up with a DX Type 2 Diabetes postop.  One of my main reasons for having this surgery was to correct my insulin resistance and aviod Diabetes and the complications associated with it.

Can you forgive what is probably a stupid question up front and educate me?
I was diagnosed with diabetes type 2, 6 months before my wls, (sleeved), I never took anything for the diabetes prior to the surgery.  After surgery I don't want to take anything, and I love melatonin, I take it every night.  My question is:  What is a good range for bs. and isn't it a good thing that it decreases insulin?
All mixed up I guess.  Help me understand.
Thanks!

 Melatonin decreases the body's response to insulin. 

The NP at my surgeon's office said fasting fingerstick below 100 was perfect. They were not overly concerned with my results at just over 100 when I took melatonin  you may have to check your bloodsugar in the mornings before eating and see how your body responds to melatonin.