Awaiting Mamogram

I can think of a variety of reasons for the symptoms you are describing, and I am sure that so can your GP. While a lot of the reasons that come to mind are more in the nuisance category (meaning, unpleasant but otherwise benign) I can also see the possibility of a few things that would prompt your GP's response. Not necessarily because of any danger value attached, but because a diagnosis can take a while, and he would want to start treating whatever it is. For instance, pain from the shoulder blade to the arm pit could have something to do with an inflamation in a nerve. 

So to answer your question directly, should you be worried? No. Should you push for an earlier appointment? Yes, based on the GP wanting it to be done within 2 weeks. Assuming the mammogram, and any other breast cancer-related investigations come back clean, he would then explore other possibilities, but to get to that point you would have to first get the mammogram and whatever other investigations the breast team want to do, and that would take a few weeks to complete all the way to definite results. The GP likely wants to shorten the hunting-for-a-diagnosis time as much as possible, and especially considering that he cannot yet rule out anything.

You are smart not to google the symptoms; the internet has the tendency to come back with unnecessarily alarming and in many cases completely irrelevant answers to completely innocent situations.

You need to telephone the Gp.and tell him/her that it's 6 weeks and they will sort it for 2 weeks.  That's standard in your situation. 

Good luck xx

Go back to the GP as when I had similar pains and lump they did an urgent referral and I had a mammogram within 2 weeks, that’s the timescales where I live, they may be different, but worth a phone call to ask for it to be expedited if possible to ease your worries, hope this helps. 

Tina G, thank you.

I don’t like to hassle them, the NHS in my area is massively overwhelmed. I think my age (31) makes me a lower priority. Although I have called the GP today and they’ve managed to move it to the 21st April which is better. 
Hopefully it’s nothing to worry about but my symptoms have gotten progressively worse. 
thanks for your reply. 

You aren't hassling anyone Quinn1 and it makes no difference where you live its NICE national cancer guidelines within two weeks 

Xx