Metformin Hydrochloride and weight loss

I have been taking metformin for 5 months and in the first 3 months with diet and exercise i lost 30 pounds but in the last 2 months no weight loss, I still exercise everyday, also I have developed a rash on my lower back, my doctor did not seem to concerned with the rash I go back in 2 weeks if she does change my meds, I may need to look for other options.

i don't under stand im on metformin hydrocloride for type2 and im a male it sounds like this is used for females? but i haven't gained weight hell i was a 285lb 6'5" guy and after a year of taking this stuff im now today at 6'5"and 177lb that a lot of weight to lose in a little over a year, i did have the gas for a few weeks when i first started it but that was about it other than the massive weight loss isn't too bad i was a little over weight then anyway,

I have experienced 7 lbs weight loss. But I have been trying to lose weight forever. I am still attempting to decrease my weight, but now it seems impossible to lose the extra lbs i want to shed. Is this common for this drug to make it harder to lose weight?