It will be okay...each day it will get better. I think the sadness ad fear comes from setting a very strict boundary...which is hard. You have basically said do not talk or treat me that way again or there will be consequences.
We talk about self growth here a lot and it is important....but sometimes you have to say "enough is enough...I will not accept this treatment anymore". Some treatment you just need to detach from and accept....say calling you a lousy mother....but other treatment like yesterdays phone call is not acceptable.
Good job on taking some power back...because that is what you did.