I have a bad mattress, it hurts my body so much...If I sleep on the hard part ..!

I have a bad mattress, it hurts my body so much...If I sleep on the hard part .....?

Which is directly under the actual mattress, will it hurt or better my back?

Dont sleep on the box spring. That will hurt your back more. I suggest that you think on purchasing a new mattress. You can purchase one for a couple hundred bucks that will last a few years, but if you want one that will last more like ten years then think of spending about a grand. If this is not in your budget right now (and I know its not for alot of people) think about getting a memory foam or down topper for the mattress for now. Atleast that will give you a little more comfort in the time being for around a hundred bucks until a mattress is in your budget. If this is still a bit high, you can spend about sixty bucks and get an egg crate patterned mattress topper (or around thirty bucks on sale.) I have a king sized mattress and these prices are for king/queen items. If your bed is smaller you may find better deals. There are plenty of companies that also offer deffered payments on mattresses as well. Your best bet is a new mattress, but I would say get yourself something now until you can afford a good one. A good nights sleep is important to your health and obiously you are not doing well at the moment. Good luck, I hope I have helped out a bit.