Is it blues or something else?

Has anyone ever felt they didn't celebrate their pregnancy enough?Such as wished you had recorded more of the mile stones. It feels that way with both of my pregnancies and births and the births I hardly remember. It's just sad to me, it's such a momentous occasion and I can't remember and feel like I missed out. Has anyone else felt this way? I feel like this may be something close to slipping into a depression.