Is in that anything wrong beside our pillowtop mattress? Me and my fiance have had our pillowtop mattress for almost 7...

Me and my fiance have had our pillowtop mattress for almost 7 months immediately and we have noticed that it is convexed. We both grain like we will fall past its sell-by date of the bed because it is higher in the center than where on earth we sleep. Im not sure if its because its a pillowtop or what but we have been losing sleep because of it. If anyones have some suggestions or ideas please reply. much appreciated. thanks
Answers:    the problem next to spring mattresses is that over time the coils will compress down ... if you sit on the side of the bed this will compress the coils there and this sounds like what have happened with your bed...since you enjoy had it only roughly speaking 7 monthes it should still be under warrenty... I would do a claim on it try and see if you can...