Pcos and annovulation

I'm 29 and ttc #1. I had terrible periods in my teens, heavy with depilitating cramps so at 15 I was put on the bcp. It used to be that if I missed a pill if start bleeding the next day but in April I went off of it and no period...for the next 6 months I had acne, unwanted hair growth, mood swings, the works. Went to an endo who tested me and showed slightly high testosterone indicating pcos and put me on 1000 mg metformin. Within a week I got a period! That was in November and since then I've not had another...I'm going to a RE next week to see what the next step is. Basically I feel down and hopeless...anyone else experience this?? Btw-I'm quite thin naturally (18 bmi)so diet and except use is not an option for me....I do not work out but I am active so the ann ovulation is not a result of over exercise. Any advice/stories would be great!!!