That is wonderful. The point when you are breaking an addiction - I did - is to take each day as it comes. You are not perfect and you never will be. But remember the difference between St. Peter and Judas. They both sinned and betrayed Jesus. But St. Peter was convinced, even his dark despair, that Jesus loved him and would forgive him even though he was a sinner. Judas thought that he could never be forgiven and killed himself - which is the most tragic thing of all, because Jesus would have forgiven him too if he had picked himself up and asked to be forgiven.
So tonight, as you say, make a good act of contrition from the heart, and go to sleep and thank God for the blessing of your faith, which you never really lost - you just buried it.
Also, I would read the mass readings for today if I were you. They seem to be rather interesting in that they could have been selected for you personally today:
usccb.org/nab/091008.shtml
I would make a point tomorrow of going to however many local parishes you need to until you find a priest who can hear your confession. Don’t be afraid of the parish secretary either. Insist that you absolutely need to speak to a priest about having confession right away. No good priest is going to say no, although they may make you wait a bit.
God bless you and grant you a safe and peaceful night of rest, and the courage and grace to make a good confession tomorrow!