M.M.
I agree with the others, it sounds like PPD - Post Partum Depression. I've replied to several other requests on this site and feel like I might be bugging some people with the details of my PPD experience, so I'll keep this one short!
In a nutshell, I suffered from Severe PPD which lead to PP Psychosis. Attended a PPD support group which I later helped facilitate, saw a Psychologist and Pscyhiatrist.
If you are experiencing PPD it will NOT go away untreated, only worsen.
I recommend you call you OB/GYN or PCP and schedule an appt immediately. They should have a screening they can administer to see if you fit the criteria or would benifit from Psychotropic meds. Please don't be embarassed to ask for help.
If you have any questions, I'd be glad to help.
Also, please let us all know what happens.
M. M.