I use to be in an abusive relationship and got hit in the nose a few times since then I have trouble breathing and always have mucus in the a.M. Help!?

Examination. A full examination is necessary to help determine the cause of the nasal obstruction. From your history it may be due to septal deviation and/or nasal valve collapse.
Nasal trauma. If you have been hit in the nose, you may have fractured the nasal bones and septal cartilage. This can lead to narrowing of the nasal air passage, making airflow difficult. This may be causing you to mouth-breathe at night, which dries out and thickens mucus as it moves from the nose to the throat. Try saline spray for relief. You may need to have nasal/septal fractue repair or septorhinoplasty.