Chest.

[zippy]

I have had a left middle back ache for 4 months and keep thinking it's my lung. It's there every day and my left shoulder hurts too. I had my bloods done twice and oxygen levels checked and tapped and listened to and all ok. If it was muscular why now am i feeling chesty and bringing loads of green phlegm up every day too. I am trying to be rational but i can't stop worrying it's my lung.

[montys]

If the phlegm persists for more than a week (and you're not a smoker), you should get it checked out, regardless of the back pain. Most likely though, it'll pass.

4 months is a long time though. When you got checked out for the blood/oxygen levels, did they also examine your mobility and check for bone/muscle damage?

[zippy]

One dr had a feel and said sounds more muscular.

[montys]

Okay, well then you can trust him/her and assume these two things aren't related. How long ago was that check-up though? 4 months is a while. If it's interfering with your day-to-day life or bothering you constantly, another check-up would be justified IMO.

[zippy]

About 2 months ago, i had my bloods done and oxygen levels etc checked.