Can I have post partum still

So I’m 9 months pp and I still feel depressed . Idk if it’s pp or the stuff I’ve been going through . Long story short my baby daddy/ bf for 3 years got the girl he cheated on me with pregnant 7 months after me and I still love him very much . My emotions at everywhere and I I mean to everyone and I hate being around people . I just miss being in relationship with him . Idk what to do .