I had a dream that my cat died & i woke up to myself crying from my dream. i tried to swallow but my throat is tense & it hurts. why is that?

Emotional distress: Emotional distress often includes physical tension and that can cause pain. Waking life sad events can bring this on and so can dreams. If this is a singular event and you have no further symptoms, you were simply saddened by the loss of your cat. Otherwise you might want to see a therapist to figure out what's happening. You don't need to jump to a DX or think of meds yet. Just watch how you feel.