Has anyone had side effects from a memory foam mattress?

Without any change in my routine I've noticed that certain symptoms have been increasing. Body aches and pains, increased anxiety and fear. Depression, lack of energy, etc. I know I should expect some and/or all of the symptoms but the onset and escalation worries me. (I know, the more I worry the worse it gets, the worse it gets, the more...) I bought a memory foam mattress about a month ago and noticed the strong odor called off-gassing. Following directions I let it air out for 48 hours or so and though I could still smell the chemical odor a bit I switched out my pillow top mattress and didn't give it another thought, Now, I am giving it second thoughts as I can still smell the odor (albeit faintly) and I feel like @$%#^$%. I've put my old mattress back on and will see what happens. I may need to change the medications I'm on, but before I go through that process I wanted to get any feedback anybody might have about memory foam mattresses. Thanks