Severe pain after a filling

Hello! I went to the dentist last week (Thursday 8/13) and had a few fillings, all bottom molars. One of them (the very back tooth) has been bothering me like crazy ever since. I originally thought it was just because the bite was off so I went back today to get it adjusted but it’s still really bothering me. The shape of the filling definitely still feels off and a little sharp (but the bite feels fine), and the gums around it are definitely irrated, but I feel like that does not constitute this level of pain. I’ve had to take ibuprofen/tylenol regularly to manage the pain.
I have never had this happen after a filling, and I have had MORE than my fair share of them (I easily have had over 30 fillings).

I’m wondering if this is a normal reaction to the bite being off or something else. Could it be an indicator of needing a root canal or is it too soon to know?

I really don’t want to have to go back for more dental work 😩 Any advice or ideas as to what could be going on is much appreciated!