Hi Paris1066
I also take Metformin and had some 'side effects' when I first started. They started by gradually increasing the dose (as this apparently can often help prevent problems) and thought I was OK, but once up to the full amount I started having probelms.
How much metformin are you taking and did your GP gradually build up your dosage? Another thought, are you taking the tablets during / immediately after a meal - this is advisable as taking them on an empty stomach can increase any problems.
I went back to my GP and they switched me to a slow release form of metformin and I no longer have any problems. Apparently they have to start you off on the normal metformin as it is cheaper...and will then switch you if you have side effects!
I'd suggest making an appointment to see your GP as soon as possible - so they can change you to something more suitable - don't struggle on if they are causing you a problem.
Ali.