Breast pain

So for a few moths I've been getting sore tender boobs around the time I'm due to start my period . A few days into my period it starts to go off a little . Recently I've found I've been getting a more severe tenderness in my right boob ( it's like a bruise type pain ) just on the underside before the crease . Also my nipple feels like it's been put on the floor , stamped on and squashed like a discarded bit of chewing gum ! I have tried examining myself and 2 weeks ago I could be sure I felt a knobly mass-lump and I've been checking ever since but I do have breast implants so it makes it a bit harder to determine if it's the edge of the implant I can feel . I am getting an appointment to see my doctor but what's your thoughts ?