For two days I've had a strong back pain on the left side. It's much worse when I sleep, it woke me up last night. And I woke up with fluttering in a rib cage. I am so scared. My mind tells me it must be something muscular because it worsens when I move my hand or lie down but my anxiety tells me it's over for me. And the pain is very annoying. Yesterday it stopped a few hours after waking up.
I work from home and I often work in bed with laptop so my posture is horrible. But I am still scared that is my heart, I am overweight and had high cholesterol last time I took the blood exam.