As you can see from the replies, there no need to be squeamish about the details, and it might help you to deal with your post partum injuries, if you search for posts from other mothers using specific terms.
Meanwhile, the only way I could even consider a second was because I made the obstetrician promise, in writing, that I could have a c section. It was still after a good 4 years.
I am not going to share the details of my experience here, but in the end the only thing that really helped was counselling and emdr. This put the memories firmly in a box in my mind. I can remember it all clearly, but the "trauma" feeling is no longer attached to it.
Meanwhile, only a few weeks in to being a mother, you need to gather your support/ doctors, whatever it takes to process, and file away.
A lot of it will depend on where you live. You haven't said anything particularly specific, so if you're happy to name your town or borough, someone might be able to give you insight into local services?