Bloom Cloud Medium Sleep Country

I have had this mattress for 5 years. It was great up until 3 weeks ago when it suddenly started to give me horrible lower back pain, radiating upwards as well as pain and odd feelings throughout my body due to the lack of support. I'm not entirely sure what happened, although I did have a family crisis 3 weeks ago and I believe the stress exacerbated how my scoliosis feels sleeping on this bed. I have slept on another bed during these 3 weeks and I pretty much had no pain, other then when I slept on my stomach, so I do believe it is the Bloom Cloud mattress giving me back pain. I fall asleep on my back and usually either flip onto my stomach or sides during my sleep. I also find, as I sleep close to the edge, my body slightly tilted downwards to the midd of the bed, so I think there is a slight sag in the middle of the bed. I have never woke up with back pain, or had back pain keep me from sleeping before so I find this experience very odd.