It could very well be. I do use progesterone cream. Been using that for more than a year now and have seen gradual improvements. But this pain near the armpit is really strange. I wonder if it has to do with the nymph node there. When I rubbed/massaged it, I got a bit dizzy in the head.

Quoted from balletomane

I wonder if it has to do with the nymph node there.

, I think you mean Lymph node. But I can just picture you, a tiny nymph of a ballerina.

Yes yes, I meant the Lymph node!!! ROTFL!
Maybe a nymph is doing some trick there  

a pain under the right side of the shoulder is gallbladder.. shorthness of air is another way to tell..

since you had it so many days I might not worry any more but if it gets worse then I would see a doctor.. could be indigestion.. that is confusing..

the way to get rid of indigestion is to have a bottle of maylax at the bedside and take some and see if it goes away.. if yes then you know what it is.. if not see a doctor.. even ids you never take his advise nor his pills.. but knowing helps..

what is your pulse when it happens?  are you fearful?  that is a sign of heart issues..  

Hi Goldie,
No, my pain was on the left side and quite high up, very near the armpit. And there was no shortness of air. I'm glad it doesn't hurt today... maybe just a dull sort of soreness but not as pronounced as yesterday. I'll see if it goes away totally soon. Thanks for everyone's concern and suggestions.  

I'm starting to get a bit worried about this left shoulder ache, which has spread to the whole left arm. It has been feeling heavy today, and it lost its strength. I could not even carry a grocery bag without feeling utterly tired. Very unusual. There has sometimes been tingling sensations in the upper arm, and sometimes pulsating feeling right around the arm pit. I have read that left should pain/heaviness could be related to heart problems in women. Is that true? Is it a cause for serious concern?  

Please go see the doctor once to often instead of not enough... I think it will tiurn out to be nothing for now.. but still one never knows.. if the jaw is getting into it the its the heart for sure.. no fooling around.. all the best..

the good thing .. it settled in one direction..  

Dear Goldie, as much as I dread going to the MD, I will consider doing that tomorrow... it is late at night already...