They may be willing to waive some of the late penalties or spread the past due balance over few payments. Let them know you're anxious to avoid charge-off, but need some help. Your creditor may even be willing to re-age your account to show your payments as current rather than delinquent, but you'll have to actually talk to your creditors to negotiate.
The credit union is probably taking all your debt into consideration, not just the mortgage. And with a personal loan, new mortgage, credit cards, car loan and student loan, it sounds like you have quite a few bills you’re handling. It’s understandable you want to get your interest rates down, though, and it’s good you’re trying to be proactive about the process. Just because one lender turned you down doesn’t mean they all will. But you do want to be careful about applying for loans with multiple lenders as the inquiries can impact your scores. You might want to try one of the other options mentioned in the article before you give up. If you get turned down by multiple lenders, though, then you may want to at least talk with a credit counselor to see if they have suggestions.
With poor credit, you may not be able to get approved for new credit products like credit cards. Although you may still be able to take out an auto loan or a mortgage, you’ll pay a much higher interest rate because of your low credit score. Compared to a borrower with good credit, someone with poor credit can pay $50,000 more in interest on a mortgage. Over an entire lifetime, you could end up paying over $200,000 more in unnecessary interest just because of bad credit.