stop shaming women for having children with different fathers

I am really upset, severely. You know why, because last night I, at 25, a mother suffering with PPD and two children. A woman, that works her butt off, saught treatment, I'm on medication, left an abusive relationship (which no one knew about because surpringly, some people don't post their entire lives on social media) Anyway, someone in a MOM GROUP, "noticed" I my children have different fathers and I was REMOVED from the group. Did I receive a message? No. IT WAS POSTED! Calling me out! Because I'm divorced, have two children to different men, exclusively pump, and work. I am considered a "mess" of a mom and my advice for the group was considered poor advice. I'm heartbroken. A couple women I talked to in there did reach out and left the group on their own (I didn't respond to anyone I cut my phone off after I saw that.) I did wake up to some other "kind" messages especially with therapist suggestions for myself, my children, and, best of all, some information on getting my tubes tied.