My bp actually got lower eventually during most of my labor because I was given an Epideral- also for some reason in the hospital it would keep going down to around 140 or 138/88... so I would always get released within a few hours. They couldn't figure it out. It was just like I would get more comfortable with them. Also, they let me lay on my left side which is my LOWEST bp reading. Dr office won't let you do that. I had a reading of 122/72 towards the end right before I delivered. I also had two shots of morphine beforehand. But my first reading when I initially got into the hospital for delivery (induction) was like 170/90 something.