how should bring up fertility treatments to my S/O?

My S/O and I have been together for two and a half years, we decided that we were going to stop using protection after we got engaged. He knows about my fertility issues and everything, and he's been very supportive. But after "trying" for about 8 months I want to talk with him about fertility treatments. He always tells me that it will happen with time and we just have to be patient but I'm tiered of being patient. And the cyst on my overies are starting to become a problem and I'm getting worried that it will get harder the longer I wait. I had a miscarriage when we first got together and I get worried bringing this stuff up to him because it crushed him and I don't want to put him through that again. Any advice or support would be helpful. Thank you.