Hi Kylie, I am about 5 months behind you. Also DCIS and mastectomy and immediate reconstruction 10 days ago; so still battered and bruised. I have two sisters with breast cancer as well ( one has already died) and tamoxifen has been recommended for me too.
My concern is the family history. Is that an issue for you too? There was study in the Journal of oncology dec 2012 that shows BRACA negative women with strong family history have a 15% chance of getting cancer in the other breast. Tamoxifen is supposed to reduce this by 50%. The general population risk is 9%. So although I'm not thrilled I think I will do what i can to put up with tamoxifen. If you don't have a family history then maybe you could go without the tamoxifen ( talk to your doctor).
Perhaps talk to your local doctor about antidepressants. Also be nice to yourself I think its quite reasonable to feel crap after what we are going through. Emotionally this has been the worst thing I have ever experienced and I've had lots of other traumas. I just think 2014 has to much better.
I am a devotee of the food for cancer site and there are lots of dietary suggestions and I can't wait to to get back to regular exercise again , because that always helps stop me from getting down.