Just to introduce myself!

Hi! I'm new here and thought: let me introduce myself.
I'm 22 years old and really want kids. I've been with my great love for 5.5 years. We're getting married next April. At 17, we had our son in September 2013, born at 32 weeks due to pre-eclampsia. He's our beautiful little gift and is already 4 years old! Two months later, I was pregnant again, but it ended in a miscarriage after 7 weeks...
We then started on the Depo-Provera shot because having a second child at that time wasn't really practical. After two shots, we stopped, and in November 2014 we decided to try for a second child. Unfortunately, no success so far. We're now on cycle 36.
In October, we finally ended up at the hospital and are now undergoing tests. But we're not giving up hope