I have had grade 4 PP twice. I knew 3 other people who had PP who had completely normal pregnancy followed by a CS at 38 weeks (standard then, now 39 weeks is standard). I assumed I would be the same.
With DS I had manual removal of placenta, in my first PP pregnancy, I saw a consultant who was doing a study into whether a previous manual removal caused a higher incidence of PP. In this PPpregnancy I was given no advice other than to call the delivery suite if I got any bleeding.
At 33.5 weeks I had a big bleed and drove myself in (we had been out for dinner, I had 1 glass of wine, DH had the rest!). I went in with my notes and a book as my bag wasn't ready. I also foolishly thought I wouldn't be kept in. I was in for 2 days then sent home. Within 24 hours I was back in as the bleeding started again. I was kept in until a planned section at 37.5 weeks. DD1 weighed in at a whopping 8lb 11oz at 37.5 weeks, I was glad I had a section, and that she didn't get to term!
We asked if there was any reason that I would get PP again, but we're reassured it wouldn't happen.
At my 13 week scan with DC3, we asked where the placenta was. I knew it isn't checked until 20 weeks, but after my last experience, I was, understandably worried. The sonographer said she couldn't see the placenta, so either top or bottom. DH and I looked at each other, said, it'll be at the bottom. PP again. We were right.
At my 20 week scan they confirmed PP, but this experience was very different. I wax held back, while they tried to find a consultant available to see me. No-one was available, so we were booked into clinic a couple of days later, sent away with a leaflet, and told "no flying, no sex, no lifting the DC, no pushing a shopping trolley".
I was admitted with bleeds at 24 weeks, 26, three times in a week at 31 weeks, then finally at 33weeks, I was kept in. Eventually I had an EMCS at 36+1, DD2 was small, but fine, home 2 days later.
If you have any questions, please ask.