Hello lovely lady!
Many of the side effects you mention apply to me after being on Tamoxifen for 15 months now. Hearing someone else who experiences not being able to walk properly on rising in the morning actually gives me cause to realise I am not the only one. Hot flushes! You betya! Also the teeth grinding which is so bad for me that I have had to visit my dentist 3 or 4 times to have work done repairing damage caused by doing it in my sleep. And weight gain ... don't get me started on that! My Oncologist has said that should I have satisfactory blood test results mid-year they will take me of the Tamoxifen and prescribe something else, hopefully less likely to cause side effects. Who knows?
Hang in!
Vicki oXo