So veary lost and out of my own body

I'm a 32 year old woman who has been veary messed up for three long years I'm in a bad married life that I was all set to get out of when I turned thirty but god had diffrent plans for me I ended up having lots of pain and anxity beyond belife I wanted to kill myself and give up I started to notice a huge jump in my weight I went from a size 2 to no size that fit me I speed walk 5 miles five times a week eat great so how in two weeks did I get fat????? I went to the doctors more times than I can count it took three long Years and more test than I even know intill finaly I was dignosed with pocs a month ago but looking back the symptoms were all there minus the hair loss weight gain and facial hair that started two and a half years ago I have awfull moodswings and I'm so veary sad all the time I have one more test this Thursday and than I will hopefully start treatment next week I'm scared and nervous this pocs is evil!!!