Periods

I also get left sided pain in my upper back near shoulder blade. 

For some reason the left side is usually the culprit. 

However I had menopausal shoulder in my right (but it’s almost always the non dominant shoulder and I’m left handed)

It sounds like your estrogen has dropped, which can cause body aches, it also controls the shedding of the uterus hence short light period, anxiety also another symptom of unbalanced hormones, try not to stress it will make things worse. I know it doesn't seem like it but it is a natural transition and plenty of us are going through it.

Sounds like you've jumped into my life this week. I've just finished period which lasted 2 days. I've pain in left hip and pelvic area travelling round back on left side. My legs are weak and aching. But you know what I was like this last month to. I did start to panic so I came on here and saw your post, now I'm calm again because I realise I'm not alone and neither are you. We get it, we understand that feeling of being totally fed up of having physical pain that no one understands, you will be ok because you know what your a strong woman who's having a crappy few days. Chin up , we will be ok eventually xx