Hope that your doctor is a low-carb friendly one. Might check with him about your medication. I took Glucaphage (off it now) and never had any issues, but I understand from what my doctor told me that some of the others can cause low blood sugar or insulin reactions easily. Glucaphage doesn't make more insulin, so is less likely to have problems. Are you checking your blood sugars? That would be a indicator above all.

Also, make sure that you are eating your 20 carbs per day and not skipping them. Drinking all your water will help too. Looks like you have dropped a good bit of weight in the first couple of weeks, congrats.

If everything is straight with the blood sugar, just hang on, it will pass.

Good luck,
wsgts