Holding back the tears..

Im sitting at the gyno office , trying so hard not to cry. I’ve been with my so for 6 years we really started trying 3 years ago but the whole 6 years we’ve been together we never used protection. My ovulation test are always negative. Everytime I tell a doctor all they do is say just to loose weight and I’ll be fine. I weigh 205. Today I told the doctor ok then if loosing weight will help me get pregnant then why didn’t I get pregnant when I weighed 140. I gained this weight from being depressed from having trouble trying to get pregnant. It’s just so frustrating :( I do think I might have pcos because I did start growing excess body and facial hair and I haven’t been ovulating