Hi and welcome. I've not seen any posts over the months about Metformin and sex drive and I wouldn't have expected any issues - I was on full dose for years. I think you need to ask the GP to change you over the Metformin SR (Slow Release) as you are having stomach issues. the SR version is much kinder and may help overall. If Metformin continues to give you issues even after that, it's not a vital drug but you might need to really keep the carbs way down in your diet to achieve the right blood sugar and weight.