Guilt after plan b

So I had an incident that was completely preventable happen and I had to take a plan b, I felt so guilt about it and still do. I grieve the possibility that I just ruined my chances of ever having kids. My mom struggled with infertility and Pcos and I have Pcos. I'm scared that I ruined my chances of being able to ever have kids not because of the pill but because of the fact that by the time my mom was 24 she had to be on fertility medication. I'm scared that this was my only chance to have a child without struggling. I've been grieving for over a year now. Ive always been pro choice but never thought I would have to take a plan b. My boyfriend has been by my side through it all. I cried the whole week that would have been around the due date if I was pregnant. I hated myself. And still do. My boyfriend and I picked out a gender neutral name to help me get closure and now I have a build a bear with the name. Is it normal to grieve this way? Or this bad and scared?