Gynaecology related. To get pregnant?

Hi. I have pcos since age 15. got married in 2019, since 1 month of marriage we are TTC , took several treatment,  husband factors are all adequate. My problem is that I'm not at all ovulating. No natural periods. I always get period only when I take progesterone tablets. I'm 57kgs , I53cms , I  was very lean before. my Max weight :45 kgs, still I had no regular periods.I put on weight after marriage. I reduced my weight to 50 kgs and tried on several induced cycles and did 3 iuis , I got pregnant twice. Both were chemical pregnancy.i had to do d&c ,. No particles of embryo was found. Only thickened Endo. But my HCG levels were 6000 iu/ml. Today I did some hormone test. 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. Are these levels normal ? I took letrozle 7mg with fsh shots each cycles but my follicle grwth was slow. does the hormone study show poor egg quality? is there any chance to get pregnant? PLS RPLY