Am I crazy?!?!

So my son is six months old and we knew we wanted to have another child but hadn't really decided when so I went on the shot a few months ago I was feeling defeated and didn't want to have another child for a while because of what we were going threw at the time but things got better and I've changed my mind and have started planning and would like to start trying again when our son is 18 months to two years old does that seem crazy