Scared of going back...

[BrightSparkles]

Unfortunately darl you have to clean the tooth in order to replace a filling, you can just put something back in, for it to fall out there must have been decay or it was broken. Given that it was a larger filling the chances of the nerve dying are larger, this may have happened, when did you have the filling done? It may need a bite adjustment, or given the use of the filling one of the cusps may be cracked.

I know I need to go back and I will. Just scared of what's going to need to be done.
I totally get it has to be cleaned. The one that was refilled was done maybe 4 months ago now. The filling is still in that one. She may as well have pulled the tooth and just put a flat piece of filling stuff there. It's so flat now
Oh well what has to be done has to be done. Lol

[Olive]

She may as well have pulled the tooth and just put a flat piece of filling stuff there. It's so flat now

I'm not sure what you mean here lol!!
It shouldn't be flat it should still have been built up with cusps, a crown sounds like it would be better, but given the tooth behind has had RCT on it, that will need a crown too.
Can you ask around for recommendations for a new dentist???