Hi
I echo the above comments about it being a very difficult question to answer.
I was actually 5 months pregnant when I suffered excruciating pain in my rib - as if I’d pulled a muscle but that it went into spasm for a few minutes. In that time, I could not move. I went to GPs - but the strongest they could prescribe me was co-codamol - I came out in a rash so had to use paracetamol. They said that it was most likely to be a pulled muscle.
Took 6-8 weeks to subside, but then got sciatica - which I put down to my increasing pregnancy weight.
Then my rib started again!!! I saw another GP in the practice - who again put it down to pulled muscle.
Towards the end of my pregnancy, I was having to use crutches to get around and also a wheelchair.
I had a check at the maternity hospital where my condition alerted one of the consultants, who in turn called for BC Consultant, who sent me off for x-rays.
They arranged for c-section the next day and 2 days later, an MRI scan.
They told me 2 hours after MRI, that I had secondaries.
They wanted me to stay in overnight so that I could have a bone scan the following day, but I just wanted to be at home.
I was absolutely gob-smacked with the dx - following the birth, I could walk unaided and was so sure it was down to the weight of the baby (11lb 2.5oz).
I had secondaries in my hip/pelvic region and also a spot on my rib.
Following bisphosphonates, I mainly suffer dull aches - like when the weather is really wet and miserable.
But, I also know when the C is on the move - these are more like angry, hot stabbing aches.
I’ve had a new pain for a couple of weeks now in my collar bone/shoulder - Onc is organising an MRI to check this out.
I have been ‘proud’ that I can get by on paracetamol/ibubrofen but was nearly banging on GPs door to request something stronger. But, this pain has now subsided ???
I have problems in bed because I have it in both hips - and prefer to sleep on my sides. So, I toss and turn all night - I get a horrible numb ache if I have been on one side for too long.
Gosh, I’ve really waffled here - get the violins out! 
I assume that you’ve been having pains/aches - have you contacted your Onc about this?
I personally wouldnt bother with GP level - go straight to BC Nurse or Onc if you have already had primary BC.
Keep us posted
Take care
Anne xx