Could I have RSI?

[Effendi]

I have had a pain in my wrist, upper arm, shoulder and lower breast (under the nipple) for a few months now. All on the right side. I'm tight handed.
My job is wholly PC based with probably 90% of that being with the mouse and copy and paste.

I've wondered for a while if I have RSI. At the weekends it hurts less but during the week it is more painful and the pain in my breast comes and goes.
TBH the breast pain worries me the most, there is no lumpiness, just a dull ache.

I live in a country where there is no NHS to speak of so am not easily able to get to a doctor's (expense).

Right handed, doh.

Yeah, easily could be. Could you swap to left hand for some mouse work and gentle massage helped me, as well as vit. B6. RSI is hard to diagnose so seeing a doc not always useful.

Thanks Ragged, I'll give those a go.