Hi Lmhteach,
Welcome … and I’m glad you found us 
If your mattress is still in good condition and has no sagging or soft spots (visible or virtual) on the sleeping surface (which may not be the case after 10 years) and all you need is some additional comfort and pressure relief then a topper may be a good solution. If this is something that you think would be worthwhile considering then post #2 here and the topper guidelines it links to has more information about choosing a topper that may be helpful.
I think that like the members here that have paid them a visit, you will be pleasantly surprised at the type of help and guidance you will receive at Quality Sleep / My Green Mattress and the quality and value of their mattresses.
I’m looking forward to your feedback after your visit.
Phoenix