I need a $5000 loan ASAP. I have poor credit, but I make $70,000 a year working full-time. What can I do?

My credit rating is in the high 500s, mostly due from being an idiot during my college years. However, I receive paychecks of about $4000 monthly but am in desperate need of a short term $5000 loan for this month. I would be willing to pay $6000 back in February on a $5000 loan received within a week from today. ... show more My credit rating is in the high 500s, mostly due from being an idiot during my college years. However, I receive paychecks of about $4000 monthly but am in desperate need of a short term $5000 loan for this month. I would be willing to pay $6000 back in February on a $5000 loan received within a week from today. Do I have any options? I've looked at PayDay advance loans, but they only offer up to $1500. I've also explored options from family and friends, but really none could afford $5000 even with a guaranteed return of $6000 in 40 days.