Hey Debbie,
If I may put in a small request not to direct questions directly to me on the forum. Sometimes that prevents others from commenting if they think you only want to hear from me. And the whole purpose of this forum is so everyone can contribute.
There are a lot of people here with helpful advice as well.
Here's another research tool...
http://www.goodkeywords.com/
I haven't used it yet but I know a few people that love it. Try that to see what you can come up with. As someone else said "breast cancer" is already going to make for a long domain but I think it's important you include it.
And if you want to include
inflammatory then I'm not sure how "catchy" you're going to be able to get with so many important words.
InflammatoryBreastCancerFacts.com is available. It's long, yes but explains exactly what your site is about.