Bought a Simmons Beautyrest Mattress World Class Super Pillowtop?

And it super *****. Bought it in July 2005. And in January/Feb 2006 I started to experience bad aches and pains. Over a course of several months, I went to the DR for all these mysterious pains…even had a mammogram. Nothing could be found, deducted it was stress related–because how could my new mattress cause this?? Anyway, thru massages, relaxation and a new mattress pad…I felt better. So, my mattress definitely has grooves, and dips where we sleep. We aren’t heavy people. Anyway, the mattress sucks, reviews are bad. Besides rotating, does anyone have this mattress–and what have you done? I am thinking about getting one of those memory foam pads–but not sure if that will just be the same problem on top of a problem. Thanks.