Think is more appropriate to say postnatal blue....It's not really depression. Due to the hormonal changes it's very easy to feel sad, overwhelm and stress right after delivery. I had the same feeling too at the first few weeks when the body was haywire, donno how to soothe the crying baby, had problem in breast feeding and so on... Talk to hubby and people u wanna share, if you have people to help to look after baby for short while accept the offer and have a little good rest for yourself. Stay positive.