Hello, ABMe, and welcome to Psych Central! Why is your sis determined to get you off an antidepressant? Were you having some depression? I assume so.
I am sorry about your aunt. Congratulations on the little one, though.
I suggest you go ahead and call your doc's office and make an appointment. Talk to him/her about your dreams and other struggles, and tell him/her the meds are not working so well. There are plenty other meds and/or see about talking to a therapist.
Grief can take many forums. Here's our grief forum link:
http://forums.psychcentral.com/grief-loss/ . You can share your situation with folks there and see what anyone might say.

I hope things will go better for you soon!