I already new something was wrong when I woke up and there was blood, but I didn't want to overthink it

I already new something was wrong when I woke up and there was blood, but I didn't want to overthink it; so I thought maybe that's the implantation bleeding which would be normal only the blood was bright red; I had called my doctor's office and told them I needed to be seen asap. I got in the very next day, and I was glad they let me have a slot available towards the end of the day. I didn't see my doctor, but the doctor I did see told me that bleeding in the first trimester is normal, and he continued and said not to worry said everything seems fine; only a couple days later I had really bad cramping so I went back in, and I was bleeding everywhere in that very moment I was losing my baby, and I knew it. The doctor I saw scheduled a D & C and informed me that she would be there for support; I was sad, scared, and angry; I got the procedure done, and when I woke up I just felt so numb I wanted to cry, but nothing was coming out I was so sad and angry. Here I am just a few months after my miscarriage knowing exactly how far along I would have been if it never happened, but I can't help but wonder if there's something I could've done differently, and I can't help but wonder if it's my fault.