letrozole expiration

[LJack]

I have a bottle of letro that is a couple years old and was wondering how effective it may still be. I have gotten some seriously sensitive and swollen nips and im gettin tired of my gf grabbin at my chest and making me want to yell at her lol. dbol, Sust, nandrolone phenylpropionate. Did front loading of each 1 cc eod for the most part, about 4 weeks in. I had some swelling, apparent lumps underneath going back a couple years while on dbol, test simply from not starting an a.i. soon enough. I tried higher doses of letro for a short time, but it seemed to wipe me out. For the most part, I laid off the "supplements" since then, and also seemed to notice a slight decrease in the lumps while on Epistane. I know in a non-methylated form, it is used to treat breast cancer, and I had heard of guys reporting that as a perk (no pun intended).
I'd like to run the letro I have if I have reason to believe its not too old. The other thing I was wondering is if the unwanted effects may be from the nandrolone. If thats the case, what should I consider, cabergoline? Thanks