High BP

Mariana • 27, married with 2 kids (Jesus 7, Kaylee 6). Expecting baby #3.
I had my 35 week appointment today and was told my BP was high. My feet were a bit swollen and I told her about the pain I've felt on the upper right side of my stomach. After getting negative results for proteinuria she asked me to go to my nearest pharmacy and check my BP everyday until my app next Tuesday. Im just scared because she said preeclampsia could cause seizures or harm my baby. Has anyone been through something similar and made it out ok?