Lumpy and painful breasts

Hello everyone, I've recently found a couple of lumps in my right lower breast, pretty sure they have grown over a few months slightly. My breast also aches quite a bit sometimes. I have no sign of breast cancer in my family, and I'm only 28. I wondered if anyone has had a similar thing and what yours turned out to be? I will be going to the doctor of course, just in the meantime wondered how others have got on? Thanks! X