You are probably worrying for nothing. There 
Sadly, that won't stop you worrying, will it?! I've been seen many times (started around same age as you) with boob pain, and nothing bad has ever come of it. It's very common starting in perimenopause, a bit like in puberty really - and there are also more benign cyst type things around in our 40s that can kick off and be annoying, but not harmful.
So the odds are hugely in your favour of nothing nasty.
At the same time, in the very unusual event of pain leading to diagnosis of cancer (it's rare, but does happen) you are doing all the right things to get seen, get sorted, and get well asap. It's a very treatable disease for the vast majority of people.
Meantime, IME the only thing to do is to keep posting when you need to, keep busy, and stay away from Dr Google!
Wishing you all the best, let us know how you get on xx