There is another thread where a lot of people are mentioning the same. I found lump couple of days after flu jab, and i rang the hospital who gave me an appointment for examination with clinician. i'm hoping it will be nothing, but i just wanted to be sure. If you are worried it may be better to have it checked out (i defintely know i would be worried all the time if i didn't)

Thank you for replying. I will give it a week to see if it goes and if it doesn't I will speak to my doctor too. Let me know how you get on. I hope it is nothing for you too xxx