Breast pain

I’ve had intermittent breast pain in my left breast for a couple of weeks.  I cannot feel  a lump but have a GP app next week. 

My mum had bc about my age but she found a lump which rapidly grew in size. 

Welcome to the forum , it must be a really worrying time for you . Most breast cancers don’t cause pain but you are very sensible to get checked as soon as you can as if it is something that needs treating the sooner the better .Was your Mum quite young when diagnosed ?