Young and trying

My first pregnancy came as a huge surprise, I was a senior in high school and was on birth control for a long time. I found out I was pregnant on March 8th 2012. My daughter was born October 10th 2012. I remember how ashamed I was to be pregnant so young. I never wanted to go in public I was so afraid of people seeing me. It was an awful feeling. If there is one thing in the world that I'm good at is being a mother to my daughter. I find myself wanting to add another little life to our family. After 6 months of trying to get pregnant I'm so discouraged. I'm 19 years old and I can't get pregnant? It's the worst feeling in the world. Supposed to be in my prime and my body is failing me. I'm still trying to convince and will until I have another child. Would love some words of encouragement!