Today I'm feeling down...

I first have to state that I’m truly blessed in so many ways but why am not happy? I feel really depress today with no idea why and when I try to think why I feel like crying so I stop thinking about it because I don’t want to cry! But I guess when I get home and after I put the baby to bed I need to think about it and just cry if I need to ;-( have you ever felt that way? Help me be happy!