I am so sorry you are going thru this. It has been so long since I've started as I've been on Metformin for just under 11 years. I advanced to Insulin Injections now with meals and in the evening.
I do remember those effects. Do you happen to have your Gall Bladder? If not, I rememebr when I had mine removed the feeling starting back eating was like a 10 minutes till bathroom! If you are on two, and you cant get thru it, ask your doc if you can take it in the evening before Supper. That way, you will sleep thru the worst. As the earlier comment stated, for me it was a 2 week tie frame until I got thr it.
Insulin may be the next step, but with everything, the side effects are there. While taking Insulin it is more difficult to lose weight. The key for many Type2, myself included, is critical to manage nutritional "INPUT" and I recently found out for men hormonal levels (I would assume that is similar in women).
My advice for you is to see your Primary Care Doctor and ask for a referral to a Diabetic Care Nutritionist or Nurse. Normally, most clinic driven care facilities will have one of these and MOST insurances will allow you to see them, or a series of appointments on them (as preventative). It can show you how to lower morning fasting BGL and live within a Diabetic Diet without changing what you eat. In y case, I needed to lose weight and they have supported that with a Nutrtion plan that will allow me to lose weight and exercise to lower BGL. This may lower it enough to not have to take meds (I pray) at soem point. Until then, Its so important to stay within a healthy BGL and A1C that Dealing with side effects are a way of every day.
Try the evening then possibly move toward exercise in the am and I pray you get the results you need!!!
Vinny
"BE WELL!"