Hello, i am very worried about my current health, i have had certain back pain in an area for a couple months until last week when it turned into like a real bad sprain in the shoulder, the neck, chest, now my digestive system is not working properly, i have lot of diff pains in shoulder at certain points, feeling sick, tired and weak, I have been to the doctors so many times and been checked over, my blood pressure is good, heart rate and everything is normal, i have been for a blood test and now going for a scan on my stomach. I saw a doctor today who said the pain is in an area of a lot of musscle and do not worry as its probably not cancer. But what else could this be?