Also, especially if you have multiple cards (the average American has 3.1), try to eliminate the small, lingering balances. "One of the items your score considers is how many of your cards have balances," John Ulzheimer, a credit expert formerly of FICO and Equifax, tells Bankrate. "That's why charging $50 on one card and $30 on another, instead of using the same card, can hurt your score."
I had a $10,000 surgery when my medical insurance lapsed. I had to fill out a form with the hospital that stated I could not afford to pay it and they forgave it/never went on my credit. If you make under a certain income, the hospital should help you get those off, call the hospital and ask. It may be too late since it’s in collections already, if that’s the case, don’t pay it because it won’t change the negative impact since it’s already in collections. Wait for it to fall off.