Hi,
To receive the Lord in Holy Communion while still polluted with mortal sin is worse than dropping the host in excrement. We need to recognize how vile mortal sin is. It is a choice away from Christ. This is why the act of conversion is so beautiful. When we repent, we turn back to God who readily forgives us.
If Confession is offered only after Mass, then wait to receive the next time you go to Mass. Most parishes have daily Mass. Go as often as you can. You can always make an appointment to go to Confession during the week or just ask a priest when you see him. I’ve heard many Confessions this way.
Fr. Vincent Serpa, O.P.