I don't know if what amariec is talking about is as "Novus Ordo" as we think.
When we cannot make it to confession, the second best option is to pray for a perfect contrition and for the remission of our sins.
Here's a prayer that you can say during the week when you can't make it to confession:
Prayer for Daily Neglects
Eternal Father, I offer Thee the Sacred Heart of Jesus, with all its love, all its sufferings, and all its merits.
First - To expiate all the sins I have commited this day and during all my life. Glory Be...
Second - To purify the good I have done badly this day and during all my life. Glory Be...
Third - To supply for the good I ought to have done, and that I have neglected this day and during all my life. Glory Be...
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also say the Confiteor and the Act of Contrition, etc.
If its impurity that you are struggling with, I have many prayers to recommend, but this one is easy to memorize and very effective:
O Guardian of virgins and holy father St. Joseph, into whose faithful keeping were entrusted Christ Jesus, Innoncence itself, and Mary, Virgin of virgins, I pray and beseech thee by these dear pledges, Jesus and Mary, that, being preserved from all uncleanness, I may with spotless mind, pure heart, and chaste body ever serve Jesus and Mary most chastely all the days of my life. Amen.
(I have more if you so wish)