Some light:
Metformin has been shown to only have a significant effect at a certain dosage and after a certain amount of time, hence if they are giving you metformin, it would be a waste of time to also give you Clomid immediately. In addition, it is more important to be stable on metformin than start taking it and quit because you can't tolerate it. Starting and quitting messes with your hormones (and you are trying to make them more stable!).
The start of a new set of follicles begins well before menstruation and relies on a certain progression of hormones, so it follows how much your choices this month will affect your cycle next month. Your diet has a massive effect, especially if your body has a dysfunctional way of regulating insulin. Metformin works much, much better when you pair it with proper diet and exercise. If you don't eat healthy, there is a very good chance you won't tolerate Metformin. There will be an adjustment period, but there are plenty of things you can do to manage the side effects: eat a diet based on vegetables, fruits and lean protein, introduce fats and carbs slowly, ask a pharmacist to recommend medications to relieve gas/diarrhea/IBS, exercise, drink probiotic yoghurts, take the medicine during the end of your meal, drink lots of water.
After one horrible first night (I didn't realize salad would cause problems -- it's a vegetable and my favourite!) I feel literally great taking Metformin. I was ovulating regularly to begin with, but there is a huge difference in my cycles now that I'm in my third month of Met. I have no doubt that I would be pregnant now, thanks to Metformin, if we didn't have male factor issues. It has helped me make important changes to the way I eat which is good for ME in the long term. Forget my fertility for once!
