fertility and another loss

After our 3rd loss and finding out that I wasn't Ovulating on my own,we decided to go to a fertility specialist, Dr.Jacobs.After some testing,we came to the conclusion that I have a small case of Polycystic Ovarian Syndrome(PCOS).I started on Metformin for the pcos.Which I'm sure is evil in some sort of way.It makes me so sick.I took 50mg of Clomid for 5 days.Went in a week later for an ultrasound.They saw 3 great folicles.Then went home and gave myself the Ovidrel shot. 2 weeks later we got a positive pregnancy test.Went in to the doctors right away to confirm it will a blood test.Went back every 2 days for more blood work.At first everything seemed like to was going good.Progesterone and hcg levels were rising.Until yesterday.I got the awful phone call that my hcg levels have dropped.I am suppose to go back in Monday morning for more blood work to see what is going on and I am suppose to expect a miscarriage.Another miscarriage.This is 4 losses in a row.I find myself becoming an angry person.I am loosing my heart and mind.I am loosing a little sight my marriage over our sufferings.I am loosing hope and sight of my life.And I just keep praying for God to help me.