What should I do???

So I’m 18 and my boyfriend is 26 and we have been trying for over a year or so and nothing’s happened. He constantly tells me to go to the docs because I’m apparently not healthy or fertile ect. I’ve been to the doctors 4 times and I am fine but he constantly says my body is all messed up from the rods. I had the rods taken out 2yrs ago. Today I found out one of my best friends are expecting so in tell him and he just says that there must be something wrong with me and that I must be cheating. I love this guy so much but I’m just at my breaking point on if I should be that one stressing and be put down constantly.

And ideas because we really want kids but I’m really at breaking point now.

Please help!!!