A year ago, my old dentist filled my tooth and I’ve never had cavities in my front teeth before, but I did, and he filled them, but it fell out, the filling did. So I went to a different dentist because it was my front teeth, and it might not have been his fault but I was upset. Anyway, so a new dentist tried to fill it again, and it fell out again. So yesterday, he filled it again, after making a tooth hole so infection could come out, I guess. It was 3 appointments. But now, every couple minutes I feel a throbbing heartbeat sensation in my tooth, I’ve been taking my antibiotics, but it hurts extremely bad, can’t bite on anything on that side of my mouth, my other teeth have even become sensitive around where the filling was placed. He had to clean out my gums and it hurt so bad, but is this normal? What do I do?