It's a well documented side effect. The pharmacist that game my wife a flu one said she would give it on the opposite side to her bc. So if nodes did spring up, it would allow her doctors to easily differentiate should any bc issue pop up. Even that isn't a guarantee, as the vaccination can still enlarge nodes on both sides as it's a sign of a working immune system.

Tender nodes is also a good sign. Cancer tends to be painless unless it's pressing against nerves. Not a hard and fast rule, but it's how things tend to pan out.

It's a well documented side effect. The pharmacist that game my wife a flu one said she would give it on the opposite side to her bc. So if nodes did spring up, it would allow her doctors to easily differentiate should any bc issue pop up. Even that isn't a guarantee, as the vaccination can still enlarge nodes on both sides as it's a sign of a working immune system.

Tender nodes is also a good sign. Cancer tends to be painless unless it's pressing against nerves. Not a hard and fast rule, but it's how things tend to pan out.

Thank you, it's great having such an amazing support network on here. It's so easy to worry yourself into the ground. I'm sorry to hear your wife has BC, I hope everything is ok with her. That's so interesting about the vaccine, I had no idea really until I thought about it. I'm due my flu vaccination soon too! 
thank you, I have been reading that too. My lymph nodes seem to move despite being swollen but there's is pain around the whole area of my armpit / breast so fingers crossed the ultrasound gives me a peace of mind - just waiting for a date! Thanks for your support 
Lots of loveHannah