Pp depression and anxiety

Is it possible to have postpartum depression or anxiety after 6 months. I have been very sad and my heart races so much and I shake at any sort of upsetting or intense situation. More than I ever have. I feel almost worthless other than being a mom. I cry all the time and I feel like some days I just hate everything. No I’m not a suicide risk. It’s more of just an empty dark feeling and a lot of sadness and freaking out about everything. It’s so hard to take care of my son some days. When he cries for hours without stopping I tend to shake and breathe weird and cry and almost freeze up. Does this sound like depression or anxiety? If so I would like to get help and do the right thing to better myself.