Thanks everyone, I appreciate hearing about other experiences. I have been taking the Tamoxifen in the evening after dinner and I did that after reading about others who had started taking it in the morning and then switched. I am only just back to work a couple of days a week and I wasn't sure about trying to navigate anything that might rear its head while also trying to deal with the challenges of being back in the workforce (and a new job too not my old employer sadly).
Will certainly monitor it moving forward and speak with my oncologist at my next treatment round. Sometimes its hard to know is it a side effect or is it just life at the moment!!
@iserbrown thank you for the link will certainly have a read xx