Hi everyone, I was wondering if anyone could help, I found a tiny (rice sized) lump on my right breast round the side near to my armpit that hurts for two weeks untill I get my period then it's just a bit sore for the next two weeks and back in a vicious circle again.

 I had a scan done on this lump and they said it wasn't any sign of cancer, fast forwarding the pain in it is unbearable, I take paracetamol, ibruphen but if I somewhat skim past my lump the pain is so bad, I've tried to rub it out, hot compress but nothing is working; could they have possibly missing something? Is it something that's normal? Because it hurts more two weeks coming up to my cycle, Shall I try and go back for another scan? I'm kind of been left in limbo 

many thanks.