Feeling shaky and heart palpitations??

I’m 28 weeks and for the last 24 hours or so I’ve been feeling very shaky and kind of unsteady, on and off. The feeling reminds me of right after I’ve had a really hard workout and lifted really heavy (not lifting currently). But I haven’t done anything too active this week. Also for the past week or 2 I have been experiencing heart palpitations. Usually a couple times a day. I have an appointment at the end of this week and intend to bring these concerns up but just wondering if this is normal?? I read that the heart palpitations were normal but now I’m getting concerned with my shaky and weak-feeling symptoms.