@Agni3 – Hello, dear! You should know that you are not the only person who is that scared to go to the doctor, but you really do need to go. Chances are this is nothing life threatening at all.
Once you get treated you can feel much better both physically and mentally. All of that stress can’t be helping the palpitations and dizziness symptoms at all. Actually, major stress can be a part of dizziness causes and palpitation causes, too.
Go ahead and go – you’ll be glad that you did. Even if something serious were wrong (which is probably not the case) you would be far better off getting faster treatment.