Make a fuss if your not happy, they can get a bit lax sometimes. They can give you all sorts of pills to keep it in check and keep the placenta healthy. You can have scans and additional blood pressure/pee checks. I didn't and kinda wish I had. I only had routine appointments every 2-3 weeks, even though I had elevated BP. In fact they couldn't see me between 36w and 40+3 as they were too busy. My BP was about 150/95 at 36w unmedicated, which had turned into late onset PE by the time they eventually saw me at 40w. It was over the 160/100 mark by then, I was swollen and had visuals, reduced movements. I was admitted on the spot, medicated and induced immediately. My son was born 7lbs, which sounds ok, but he had a skinny 5lb body and a 9lb head. The placenta was breaking down (I had a good look at at as I am very familiar with placentas!) To be honest I think we got away with it. I would have been much better off being induced at 38w
With my second I was consultnant led and they paid more attention to me. I had routine appts as if it was my first baby and was put on aspirin. If I moaned tho, they got me in for a BP and toco monitoring right away. I had normal blood pressure with him tho, so inwas happy to go 2-3 weeks between appts (and got a home BP monitor) I deilivered him at 38w anyway (37 by my dates) and his head and body were more or less on the same centile. He was 7lb 5oz, healthy placenta.