I've been getting a strange sensation in one of my teeth. I feel like when I bite down on certain things , there is a strange pressure then it feels like my tooth is lifting up. Could this be the sign of a filling being loose or coming out? I can't be seen until Friday by the dentist. I'm really worried about it. I don't have any pain or sensitivity, I just am scared it will fall out before then. When I try to clench my teeth, I don't feel it, it only happens once in a while, but it has been happening more lately. Nothing looks out of place or is loose that i cant feel/see in the mirror. I'm so puzzled, Please help if you have any clue what may be going on!!!!