PCOS support,Pill side effects

I've been diagnosed with PCOS in 2016. Only given metphormin which made me severly sick. I gain lots of weight in last two years. I also suffer from anxiety and insomnia. I've started taking pill(Desolon)for one month. It made me severely nauseous,moody,emotional and loss of appetite. But for the first time in my life I've slept on schedule for one month. I'm willing to try different kind of pill. My blood pressure also fluctuated a little bit. Will these side effects going to be away? What kind of changes should I make to my lifestyle?