Is it normal to fell like you want to hurt your baby?

I’ve had moments where I felt like hurting my baby. Random images of hurting my baby will pop in my mind, throwing her, hitting her, or smothering her. I know it sounds terrible but it really is the truth. I suffered with depression for a very long time so it’s not like it’s ppd and developed after. I’m scared to tell anyone but I don’t know if I should ignore it. I’m scared and feel like she may be better going up for adoption to a good family. I’m struggling really bad and even feel suicidal myself. I don’t know where else to turn I don’t have friend or family to confide in...