I had the same problem, however, that doesnt mean thats what is going on. I ended up needing a root canal. Sometimes, it will take a long time (even up to 2 months) for the nerves to completly settle down after a filling! Thats what i was told. And after 2 months the throbbing and hot/cold sensitivity went away, but I still couldnt chew on it because it really hurt. It thats the case, I would have it rechecked. You may need a root canal. But if you feel it getting better everyday, give it some time. You may just need to let it heal.