I think I have PPA / PPD

So I’m only 2 months Post partum and I have these horrible intrusive thoughts majority has to do with death. I have even been changing her clothes and I have gotten this thought of what if she passes away and I have to dress her. I feel like I am going crazy. On top of that my mom doesn’t help she says that if I keep having those thoughts that I will manifest it. But it’s not me I literally don’t know how to stop them. I live in constant worry.. please if anyone has gone thru this how did you get out of that??