When to call the doctor?

Amnesty • Mommy to Aurora born at 31w2d, Declan born at 37w0d and Connor and Liam due 1/31/2018.
So I have to take my blood pressure everyday to keep an eye on it since I had severe preeclampsia with my daughter. They told me to call of it was high. UT they never told me how high was considered high. What do you consider high? I have an appointment with my high risk doctor on 1-4 so I can ask them then and it has been normal so far but as week 31 (when I had my daughter) approaches, the nerves and worry are setting in. I also know that since my preeclampsia was so severe I could end up with it even earlier this time around. Maybe I'm blowing it out of proportion but I just feel like I should have a number.