Hi @Pennyblossom - welcome to the forum!
Yep - Rollercoaster is a good term for it .... and it may go on for some time, I am afraid! :( It can be hit & miss too - you may be fine for ages, then out of left field - WHAM! It can be from someone being rude or unkind to you, or an actual 'accident' or something that just throws you for whatever reason - that can bring you to tears.
Keep doing your most favourite things (if you are able to) to keep a 'positive outlook' - I've found that doing that keeps my mind of 'other things' & works well for me xx
Well done on nearly finishing your rads ..... your boob will remain 'hot' for some weeks afterwards, so make sure you continue with the lotions & potions - calendula was one of the creams suggested to me at the end .... also a Baby Rash Ointment called BOZ! It is quite thick & I'd put a paper towel over it so it didn't mark my clothes - but it all worked well for me!!
Quite a few of us have felt fatigue at the end of the rads - but the one thing that really threw ME - was how upset I got on my final day. I turned up, all bubbly, looking forward to it - and then just blubbed uncontrollably throughout the whole final session! They'd been my daily rock for 4 weeks .... and I suddenly got scared of not having them around! It was really Weird! In hindsight - I am fine, I was fine - but it happened - so maybe 'be prepared'! ;)
As @TonyaM said - I also had a holiday to Norfolk Island 2 weeks after my rads finished as my present to myself, as that was about the 6 month mark from detection, then surgery & rads! ;)
Ask away on ANY question .... there will always be someone here to give an honest answer xxx
All the best for your continuing treatment