I'd like the second what has already been said. I also have FBD, as does everyone in my family. I had to have a lump removed at 19 because it grew very very quickly, however, I've had no other problems to date and that was over 23 years ago. You should be doing the self examinations every month (check on the internet for the exact procedure.....it's pretty specific about the best way and the best time of the month). Other than that, you can monitor some foods you eat and simply relax. It can be painful at times, but most people I know "outgrew" the pains or had very much relief after the birth of a child. That is certainly not a recommendation that you get PG, but simply additional information. I had honestly forgotten about the pain when I first noticed the lumps, but the dr can tell these lumps from anything more serious pretty easily during an exam and you will learn to feel the difference as well. Always check with the Dr if you are concerned, but please don't let this stress you too much.
As far as immediate pain relief, tylonol or advil (whichever you can take) will take the edge off and warm damp washcloths can also help. Just be careful not to burn yourself if you are using this because the area is so sensitive.
Best of luck to you!