Its hard for me to comment as I can't really see the bridge and test it. I would go back to the dentist and ask for a new temporary if its not bearable though. I have placed temporaries and with temporaries that cause problems, I generally will replace them. I don't like to leave the patient in any discomfort if possible. Your particular situation may not allow you to be pain free and there may be some slight discomfort but it sounds like its more than just discomfort or annoyance. The temporaries should probably be replaced.