I changed my apple id and now I don't have access to my shared photo streams.

I thought they were gone, but I got an Apple TV for Christmas and can see the shared photo streams on there, along with all of the pictures. How can I get the shared streams back on my phone and iPad? I'm signed in with the same (new) apple id on the tv, iPhone, and iPad. I want to add pictures to the stream and not lose all the comments already placed and have to re-invite people.