Karen,
During my rehab stint I did, our session with the Psychologist talked about that. I actually don't think its the Tamoxifen, but rather the after affects of what you have been through. I was incredibly aggressive through Chemo, my kids called me Chemoroo LOL. Ive settled alot since then, but I find Im less tolerant than I ever was before. The Psych explained its because of our journeys and the depth of it, our bucket is always full and it doesnt take much to tip it over. All completely normal, and I believe it just takes a long time to even out. I too still have mood swings of anger and tears, all sorts of things, its awful. Big hugs ladies, we are actually doing OK! I think better than we allow ourselves to believe considering what we've been through.
Melinda xo