Feeling shaky and heart palpitations??

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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.