My dad's got a history of high BP and used to take meds, but a couple of years ago he lost lots of weight and no longer needed to take them. He says he's been a bit slack about monitoring his BP recently, but when he took it yesterday for the first time in ages it was 177 over something, and today it's 188/78. He took one of my mum's BP pills and that's brought it down, and he says he'll go down to the doctor tomorrow afternoon after his game of golf in the morning. I know nothing about high BP, but looking at Google I think he ought to go either tonight or first thing tomorrow (before playing golf!). Am I overreacting?