I AM ON A LIMITED INCOME BUT I NEED A

I AM ON A LIMITED INCOME BUT I NEED A NEED A NEW MATTRESS. I AM SLEEPING LESS THAN 5 HRS A NIGHT BECAUSE MY MATTRESS IS MORE THAN 8 YRS OLD. I HAVE TERRIBLE CREDIT SO CAN'T GET A NEW ONE ON CREDIT. I AM LOOKING AT A AIR MATTRESS WITH 2 PUMPS. 1 FOR FILLING THE MATTRESS AND THE OTHER TO KEEP IT FILLED DURING THE NIGHT. I FILL ALL OF THE TEN SYMTOMS OF LACK OF SLEEP ON WEBMD. MY DOCTOR HAD DISREGARDED MY LACK OF SLEEP AND HAS ME ON5 DIFFERENT PILLS. DEPRESSION-DIMENTIA-WEIGHT GAIN-HIGH BLOOD PRESSURE AND THE LIST GOES ON. DO YOU THINK A GOOD NIGHTS SLEEP EVERY NIGHT WILL HELP AND WHAT ABOUT THE AIR MATTRESSES? I KNOW TIS SOUNDS LIKE A SILLY WUESTION BUT I HATE PILLS!