likelihood of a second miscarriage?!

Brittany • wife to henry, mama to norah + chloe
Hello ladies, as of Valentine's Day I've become aware that I'm pregnant. I am currently 4w1d. I suffered a miscarriage on June 4th 2015. What's the percentage or likelihood I'll miscarry again? I do have PCOS but I'm on Metformin for it. That's how I ended up pregnant both times. I'm off of my antidepressant and so my anxiety is back full force I just need some information to help calm me down. Like has anyone else had a miscarriage and gone on to have a healthy second pregnancy? I'm worrying myself sick literally. Anything to help ease my mind. I can't sleep because I'm so worried!