PMS without periods and on tamoxifen

Cjs47

Hi. I'm 53 and haven't had a period since January 2015 while on chemo. Started tamoxifen last September after radiation and was told by my gyno that I was in menopause. For the last several months I've been having PMS symptoms: one week a month I have severe night sweats, more frequent hot flashes, bloating, irritability, and horrible sweet cravings. Has anyone else been thru this?

Thanks in advance for any responses.