PCOS Stress

I'm 19 and was diagnosed with PCOS about 2yrs ago. At that time I wasn't hugely concerned by it but lately I've been thinking about my future and the fact that I want children and how PCOS might affect that and its really been stressing me out a lot, to the point where people around me have noticed a change in my mood as I'm usually quite a happy person. Another thing that has added to the stress is that I'm overweight. I've always been a big girl and I've been trying so hard over the years to lose it and its just not going anywhere. Its really been impacting my self-confidence. I haven't been kissed or even had a guy ever express any interest in me and i just feel horrible and sad. And being away from my friends in uni hasn't been helping. I feel so overwhelmed by everything and its all piling up and I don't know what to do anymore