Been trying for a baby for 2 years, SO doesn't want to see Dr

My boyfriend and I are in our early 30s and late 20s respectively, been together for 7 years and have been trying for our first baby for 2 years. I just recently downloaded this app to help with our journey, but you can't help but do research and read articles for tips, and a majority of them say after a year to see a Dr. My SO is not interested in the slightest of seeing anyone for a medical opinion, but I am getting a combination of feeling frustrated, annoyed, feelings of defeat, and I don't know how much longer I can keep leaving it up to chance. I've tried talking to my SO, but he is pretty much like if it happens it happens. What do I do?