You could look into a 0% fee balance transfer credit card as well? Check interest rates on all of these options (overdraft, CC, loan). And choose the lowest.
I would say it’s probably better to speak to your bank and come to an arrangement for paying off the overdraft than to take out a loan
No you need to say what your earning now I think. However check your interest on the loan cos I think overdraft interest would be less than a short term loan. What I did was reduce my overdraft each month by a certain amount.