For the past two months I have been having problems with pain in my right lower back. Nauseated to the point that it interfers with me eating. I get dizzy at times and have passed out twice. I feel like I have an elephant sitting on my chest. My heart at times feels like it's in a vise grip and then when it loosens up my heart feels like it shudders. My O2 sat runs in the low 90's and my pulse runs at best in the low 100's. I do have arrhyhtmia with notable heart pauses.