I think that you've done the right thing going to see a doctor - they are the ones that can diagnose you not us. You might need to get a referral for a psychiatrist to get a correct diagnosis and good medical management.
I think its normal to be nervous about seeing a doctor and writing things down is a good way to make sure that you don't forget important points.
My meds don't change who I am they just make my moods more stable, I don't have hypomanic times when everything seems easy anymore but its worth it to not have the depression.