In terms of maintaining "fertility" if that is an issue there have been at least two trials with gonadtropins, to protect fertility. The other one was in Israel, and was posted to this site.
In more general terms if you have not done so as adjunct to treatments, you might like to consider with your advisors diet and particularly balancing the omega threes and sixes (Use search engine see posts). It is on the edge of "accepted" wisdom, but there is good evidence of links to HER, and as a general but unscientific observation several of those who are longstanding sufferers posting on this site seem to take their diets seriously as part of their rsik management strategy.
RB
http://www.her2support.org/vbulletin...ight=fertility