PPD????

I am almost 9 months post partum and it wasn’t until the last few weeks that I have seriously considered that I may suffer from PPD. Not to say I haven’t had it the entire time, but now the symptoms are really starting to impact my life. I do not have much of an appetite (strange for me), am below pre pregnancy weight, have no sex drive and am generally lethargic. As a result of probably poor nutrition while nursing, I have been sick a lot as well. I am of course terrified that it is a more serious health issue, but am trying to work with my physician to figure it out. Any thoughts? Do you think it could be PPD contributing to general feeling of being “off”?