Blisters on the back of my tongue and red veined throat
If I am not mistaken, I have a red veined throat for years already, and for less long, but still longer than a normal fever I have red blisters (& white stuff) on the back of my tongue when I am not having a cold. What kind of thing can this be, and what else than an OI?
It's impossible for me to tell from your description. See a dentist or oral surgeon or your regular doctor to get this checked out.