kind of embarrassed to go.

So, I'm 20 years old, I'll be 21 in 6 months and I'm currently engaged. Me and my fiancé have been trying to get pregnant for about a year and 2 months now and it hasn't happened for us. He keeps pushing me to go to the doctor BUT I'm kind of embarrased at how the doctors will look at me by me being so young. Can they deny me or what? I don't even know what to say when I go in. Do I explain to them that I want to be checked out to see what is causing me not to conceive. I just don't know! Bare with me guys. Can any one give me advice on what to say? I'm just worried that they'll look at me weird since I'm young 😩. But I am engaged so it's not like I'm just trying to get pregnant by anybody. I mean this is my soon to be husband.... I hope this makes sense