Poor you, you have my utmost sympathy.
Your delivery sounds so much like my own 1st pg, despite saying in the birth plan give me everything! Quick progression, bad tearing, awful pain (refused pain relief) and baby born floppy and blue. My stitches also didn't hold, incontinence problems and I got a womb infection, couldn't bf...the list just seemed to go on & on! It was dreadful.
Firstly, I would be open about your feelings, and if need be, see your gp if you even suspect you have pnd triggered by this. I thought give it time, but tbh I felt only felt better when I returned to work some 9m later!
Pamper yourself. Put tea tree oil and lavender oil in the bath as that will promote healing. You can ask HV/MW for a ring to sit on if still too sore to sit properly. Take arnica tablets/paracetamol for bruising and don't overdo the lifting with dc.
Use the birth trauma site.
Lots of ppl say also advise talking through your birth notes with mw at hospital. I thought what on earth do I want to do that for, I know what happened!
However, when I closed my eyes and plunged in by getting pg with my 2nd 2yrs later, I was referred to a consultant because of the problems I had (particularly the incontinence). Unbeknown to me my hospital notes had labelled the birth "traumatic". The mw who had attended me felt really bad and apologised I had had such a bad time. It made it somehow feel better, as if it wasn't just me being a wuss, things had gone wrong and they knew it.
The consultant offered me an ec but the mws advised against. To decide, I had to do tonnes of reading (and the stats are really reassuring for mums like us). I had of my choosing, a guaranteed epidural topped up all the way through. It was amazing, almost a pleasure to give birth to my 2nd child, and it laid to rest the problems of the 1st.
Sorry to witter on but I just wanted you to know that it does get better, you can go on to have a good delivery and you can always chat to us.