Hi everyone, I've had a dull ache in my left armpit for about a week now.It has got worse on a couple of occasions and become very painful. The pain has gone though after I've slept. I've never had it before and I haven't hurt my shoulder or arm. Would you go to your doctor or would you wait a bit longer? I've learnt from bitter experience not to google medical conditions as they tend to scare you half to death. Thanks for reading.