Low blood pressure during pregnancy

Hey ladies, do any of you here have natural low blood pressure before being pregnant and still do even during pregnancy? I'm 7 and a half weeks, and my body has been shaking the whole day and I've been feeling the urge to suddenly faint so many times throughout the day that it makes me worried I might fall or hit myself without realising. :/ #1stimemom #pleasehelp #advicepls