i have to give myself a big old DUH! on this one! it seems you are like, the only member of the boards whose gallery didn't auto-create when you signed in. Which is why you haven't been able to do anything.
Here is the link to your gallery:
http://www.epregnancy.com/Community/photos/brenna/
You should see on the right hand side a block that says "Common Tasks" where you can upload photos. If you can't see that, double check that you are logged in, and if you still can't see it, let me know!
You can upload straight to our server -- the community can house all our photos, which i think is awesome. just browse your desktop, upload the photo, and go!
-m