is this PPD and med question?

I guess if I have to ask if it is that is probably telling in and of itself.  I was borderline on the depression survey at 6 weeks.  They asked me if I wanted meds and I thought I could get through it.  I had the baby blues initially and felt very disconnected and sad.  I got through that and am feeling more like myself, but I have been extremely moody.  I am sooo mean and terrible to my husband and I have been pretty anxious about things lately.  I am sure this will only get worse with returning to work, so I'm starting to wonder if I should give the meds a shot.  They said they normally prescribe zoloft.  I have taken this in the past for anxiety and it gave me some stomach issues.  Do they prescribe any other meds for PPD?  I had great luck with effexor before.  And seriously how are these meds if you are EBFing - that is one of my big concerns.  Thoughts?  Thanks in advance.