Hi @SharonP - welcome to the forum - I hope we'll be able to help you along the way - ask away any questions - as we have been there before you.
Your surgery was literally 1 year after mine (Jan 17 last year) .... and my emotions were (sometimes still are) all over the place. It is totally normal. Sometimes I think the BC diagnosis, surgery etc is as much a mental hit as a physical hit - it mucks with our brains.
Where abouts are you (city/town) - we may have members nearby who know what resources are available to you? If you feel distressed, you can always ring the Helpline here for a chat ..... Helpline 1800 500 258
You may have to have a rethink on your work - particularly when starting rads, as you will be having treatment every day, not necessarily at the same time. Do you have any sick leave up your sleeve? Can you chat with your boss about flexible hours or taking the time off during rads, as it can make you tired/fatigued - and is a tad mentally challenging too sometimes?
Facing your work buddies & having them all want to ask about how you are going just brings it all back - I think you are AMAZING for even contemplating returning to work in such a short time!!
I am retired, so I just tried to keep myself as busy as I could the whole time ..... my ukulele group kept me REALLY busy (which was good) as I lead the group! 3 weeks after surgery, we attended the big Uke Festival in the Blue Mountains (on again this weekend) and I was really chuffed that I was able to be there, as initially I thought I may not make it.
Be kind to yourself - take it easy. When you get spooked - take deep breaths, take time out if you can - get a coffee .....
take care & big hugs coming your way xxx