So i went on monday to my GP after feeling a painful tiny lump on my breast. After checking she said the reason its tender is because my chest is too big so everything around the chest area will hurt - especially since I was due to start my periods (started today). Told me to wear a support bra and come back after my periods had finished. The pain isnt anything like it was on monday. But when I touch it, it is slightly painful. I feel like it's more or less the same size. She said she would've given me anti biotics but wanted to wait. Is this common procedure? I know painful lumps are less likely to be cancer. But I feel like more should've been done to rule it out. I'm also only 23.