Will a dentist ever do a root canal without a filling?!

Will a dentist ever do a root canal without a filling?

I've had 3 root canals in the past at two different dentist's offices. All 3 times, I went in for the root canal and left with a root canal and a rough silver "amalgam" filling. About 2 or 3 weeks later, I went back in for a crown.

Now for my question: this time, at a new dentist's office, I had a root canal yesterday. My tooth has no filling- just a hollowed out tooth. I am concerned because my past root canals have not hurt this much after the fact. I've never before needed pain medication and this time, I am taking the hydrocodone the dentist prescribed me. My entire jaw is aching. I can't call my dentist because they're closed until Tuesday (Memorial Day holiday). I'm starting to wonder if I did have a filling and maybe it fell out? So, I'd like to ask... do dentists ever do root canals without doing a filling at the same time? I am in agony here, and I have a very high pain threshold.

no way! it should always be filled, they wouldn't leave it out! call your dentist, they should have an emergency service!