Lump & told to wait till my next period

Hiya,

I wasn't sure whether to post or not but I'm agonising over it and I guess I'm looking for reassurance. I'm 33 & I found a small lump which is located between my arm pit & breast. It had been there a couple of weeks before I went to the Doctors, the doctor had a feel and has told me to wait until my next period to see if it is a hormonal lump (next period is 2 weeks away- I've never wanted to come on my period so much!) and if it is it will go but if not she will refer to a screening clinic. I had a breast augmentation last year so I kind of think if there was anything untoward this may have been picked up last year? I'm all worked up about it as it has got slightly bigger (it's about pea size) has anyone else had this? I looked into private screening & it's really expensive. Has anyone else had something similar that turned out to be hormonal and nothing to worry about?