Patiently waiting

Adrian
I was debating on whether or not to post, but I guess I will. I've been TTC for about a year and a half now...but no luck. I was on depo around 2013 for about 3-4 months then ended due to side effects (spotting). 
I have a cycle every month, but nothing resulting in a pregnancy. It's getting me kind of down but I'm staying faithful and hopeful. My bf already has a child, and we are hoping to have one soon. I finally made the choice to see a specialist to see if there is anything wrong, and what could be delaying this process. 
Maybe I'm thinking too much into it and just relax, but everyone I get my cycle each month it feels like a let down. Hoping to the some insight and the answers I need.