Hi there, thanks in advance for any answers. Also I’m gonna apologize for the wall of text and any formatting mistakes because I’m on mobile.

In mid August I began experiencing a swelling in my gums and a foul taste in my mouth surrounding my molar, and I couldnt get into my dentist’s office so I visited my doctor, and they said better safe than sorry and put me on antibiotics. I think it’s important to note I had no pain at this time. I started the course that day and had an appointment scheduled to check it out, all was good.

When I came in for my appointment they took an X-ray and said my tooth was dead and I needed a root canal. Cool, whatever, let’s do it. I had the procedure same day and it was not pleasant at all, I felt like my dentist was in a rush to get me out of the chair, but whatever. I went home with a minimal amount of pain and assumed this was the end of it.

Roughly 1 month after the procedure, on a Friday afternoon I began experiencing severe pain in the tooth and surrounding area. So bad I couldnt sleep at night and I could feel every heartbeat in the tooth. Saturday I went to urgent care and they called in antibiotics. I called my dentist on monday and they told me to come in NEXT monday in exactly a week so the antibiotics had time to work. When I came in for my appointment they took another xray and said that there couldn’t have been an infection in the tooth and it looks great, but they’ll open it back up and check it out. So I’m scheduled for another root canal at the end of this month.

TL;DR I had a root canal, a month later it got infected. Dentist says no infection, tooth is fine.

Is there any way this is true? Should I get a second opinion? I started the antibiotics and the pain went away, and I’ve had a tooth infection before and this felt the exact same.