Thanks for the query.
You once consult physician, go for physical examination and go for complete blood picture.
If everything is normal, the symptoms can be possibly due to depression
You once consult your regular psychiatrist
and discuss related to this.
Try to spend more time with your family members and baby that can elevate the mood and can decrease the symptoms.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429