hi danielle,

welcome to NT. i'm glad you're here.
i would suggest that you find a good internist and pcp.
they should do a complete physical and begin to tx some of your sx's.
the vit D etc can make you feel very tired and it can be turned around fairly quickly with supplements.

you also need to tell your dr about your depression. you might have postpartum depression and this too can be tx'd very successfully.

if your dr isn't listening to you and helping you you need to find another.
your hair loss must be a sx of something else but i don't know enuf to make suggestions.

please see a good internist and keep us posted.
you can feel better. don't give up.
and congrats on your new baby.

ps...could you ask a friend or family for some help while you get this all straightened out?