Good Morning Ramie
I am glad you are going to be seeing a psychiatrist as they are the ones who deal in the medications used for mental health on a daily basis and have a better understanding of how each med works.
I know you are feeling desperate to get a handle on your feelings but please try not to dx yourself by over- reading on the internet. Sometimes when we read sx of the different dx we start to feel we must have all of them.
Your new psychiatrist should be able to work with you and identify which type of depression you have. It is not always easy even for the professionals as there are many mixed dx. so try not to let your thoughts spin out of control.
I wish you peace,