So I need a root canal on tooth 10. Even though I am terrified I am going to get it done. However, the dentist says it is a dead tooth (which is why I don't have any pain) but it has a pocket of infection in the gums that needs removed. The day after I visit him tooth 7 starts to ache and throb. In fact, that entire side of my jaw hurts. When I tap on tooth 7 it hurts. When I drink or eat it hurts. I don't understand tooth 7 suddenly hurts now. Could it be that it randomly has the same issue just a day after tooth 10? Is it referred pain from tooth 10? Has the infection spread? Should I worry? Oh. I'm also 33 weeks pregnant.