Miscarriage and now planning to plan having a new baby? Crazy or no?

Earlier in the month I had a very early miscarriage or as it was called chemical pregnancy (4-5weeks). Before this happened... Before the testing and waiting and talking about the possibility of it all we were pretty set on having no more kids. We were both OK with it. But since this... I find it hard to imagine a life where there isn't another one added. I'm not saying I want one asap, because really I want to finish my degree first. I just feel like I'm going crazy here... Counting down months until I graduate so I would be at a point where I'm comfortable ttc another one. Anyone else go through the planning to plan type stuff or am I just going crazy now?