I have been reading tons on DHEA and have decided to try it myself. I am 42 also. My FSH is good at 7.2, but I think there's always room for improvement. I have read a lot of impressive clinical studies on DHEA and think it's a good thing. It does take 4 mos to get the benefits from it. Good luck! Keep me posted how things go for you :)
I have no personal experience with DHEA but I have considered trying it. Unfortunately, my RE told me she didn't want me to. Here is a link to another thread which contains a lot of information.
http://www.medhelp.org/posts/show/416979
Good luck