Feels Like B-I-Polar Symptoms Since Starting Tamoxifen

I had BMX May 25th with cancer only in right breast. I have IDC & because it was caught early, & total size being extremely small, HER+Estrogen & Progesterone, slow growing & 7.5% chance of recurrence did not need chemo or radiation. I have been on Tamoxifen for six weeks, my GYN & I believe I have already gone through menopause but because I have to wait 1 yr to be certain I have to take tamoxifen. I've also been on antidepressants & anxiety meds for many years. Up until 3 wks ago I felt lthat emotionally & physically I was doing great. Yeah, occasionally I would be more emotional than normal but chocked it up to me just being me. 3 wks ago I noticed myself being over critical of my overall looks and now my main focus has been on these 2 ugly blobs that used to be breasts. After surgery I had no problem letting my husband see them but as of late my self-esteem has dropped pretty low. I no longer feel I look attractive to him & pretty much stay covered up around him. He says I am me with or without the breasts I was born with and I believe him but now suddenly my emotions are running high, I cry all the time, I snap at people over little things, and have pretty much become the person I was when I had PMS most of my life. Continuous birth control stopped them PMS years ago. I feel like the tamoxifen, surgery & going off the bc pills have finally taken its toll on me. It is so bad I'm thinking of going off the tamoxifen all together and waiting a few months when we'll know know for sure if I'm post menopausal & can take an aroma taste inhibitor. Has anyone had these horrendous symptoms & stopped the tamoxifen? Will I have the same struggles on an aromatase inhibitor?