I was on a long weekend in the Lake District once, when a nagging ache in a molar exploded into the most horrendous pain - no sleep for me with a tooth on fire and screaming when any saliva touched it.
I rang my dentist in W. Yorks. 1st thing Sun. morning and was given an emergency number in Skipton to call. Did so, was told to come in, drove agonising miles and was met by a kind dentist who numbed the pain and did a bit of drilling. He also logged me with an urgent appt. with my dentist the next day - I had an abscess and required a killed nerve and a canal root filling.
That was some pain, believe me, worse than losing a filling (I've done that too). I suggest you do the same. i.e. ring dentist and get emergency number for tomorrow.