Incomplete feeling

Ehlaura
My husband and I have been trying for a year and a half and have done 4 rounds of clomid. We are at the point where we are trying to decide to go the a specialist or not. I am just done feeling incomplete and every test I do comes back normal. 
I am just upset and I feel like this is never going to happen. My husbands 2 sister (one in law and the other biological) both are around 40 years old just had babies and I am  about to turn 24 and can't have one baby. 
I am just trying so hard not to hate them a little for this. I have prayed and tried so hard not to but I just do and then I feel super bad about this. It is worse because we can't really afford the specialist and won't be able to for a few years and I just hate it. 
I also have a godson that is due the end of July and I don't know how to feel about getting another godchild. He will be my 7th godchild and I am tired of getting godkids and not getting to have a baby of my own. 
I am just so upset and no one understands how I feel I am hopeful that someone on here does. Sorry I am done ranting now.