Tamoxifen side effects?

Hi, I am on Tamoxifen and have been on it for only a month and already It is causing me feelings of anxiety, depression, (currently have begun taking anti depression pills) , fuzzy head lack of concentration, insomnia, I feel that I cannot tolerate this treatment anymore as I feel like I am losing myself. I have not looked into any other treatments but it good to read these blogs and get an idea of other options out there. I am really scared as I have three year old daughter and if I continue with this drug she is the one that cops all my frustrations and moodiness but If I stop it then I run the risk of developing cancer again. I have had a double mastectomy and finished chem a month ago and am now on herceptim. I have also gone back to work after taking 8 months off and the stress of work has had an effect on me too. I still have numbness in my fingers and toes which is annoying and these things just add to my moodiness and frustrations....... do I stop or not?