Gyanecology related. Should be done?

I have pcos since age 15.. no cure in pcos so we started TTC two years ago. Husband factors are all normal.we tried several letrozole/ clomid induced cycles,iuis and I got two times pregnant. Both were chemical pregnancy. Only HCG levels shoot up. But can't see nothing in ultra sound. This is my hormones study done last week FSH :5.02 miu/ml LH : 9.83miu/ml PROLACTIN :18.64ng/ml TESTOSTERONE: 0.623ng/ml DHEAs : 273.8ug/do Vitamin D3: 23.77ng/ml. I have no natural periods for the last 5 years., I always take meprate/ duphastone tablets to get periods. Menarche age is 11 and from then also I'm having irregular periods. Periods twice or thrice in a year. Please tell me what should I do ? Will I be able to get pregnant? What treatment should be done? What is my medical condition please reply.