I wanted to know who had the baby lying low. They said there's a risk …

I wanted to know who had the baby lying low. They said there's a risk of premature birth ? + my working pressure is 90/60, and now it's suddenly 120/70, oh my, the analysis is normal, the midwife told me to have another test in 10 days and come see her, two days ago I felt very sick and lay down for half an hour, feeling weak, is this related to the pressure?