My baby is six months old is it possible i could have post natal depression ?

i had my baby six months ago i had a traumatic pregnancy me and partner was not getting on then he went to prison when was like 6 months pregnant during that time i did sink low and felt very alone. Then to make matters worse when was eight and a half months pregnant i had to Move from my home to go private as my partner was on remand at time and so close to the due date and had no one close to me for support i moved to be near to my mum i done this move alone his family did not even lift a finger to help during this time i went back and fourth to see him never knowing the outcome. Anyway to cut a long story short he did come out 10 days before i had my son i was so tired by this point i lost my home housing ociation for a private which had and had endless issues with the property form when i moved in like no heating when i 1st arrived. Also it turned out me losing my home was waste of time because my mother was of no help really mind you never has shown care towards me empty promises and that, i feel so resentful all the time of everything not my baby i feel guilty for having him sometimes feel my partner does not give a toss about me as well.I feel alone now i tried to tell him i think i have post natal depression i just feel he treats it as a inconvenience which makes me mad considering what i have done for him iam down all the time feel my life is doomed terrified of the future