Hi, I will try to address this, based on my experience...
I had fevers almost every evening after surgery and during chemo. They were almost always gone in the morning. They ranged from 100.5-101.5. I was told to call the onc if that happened, but i didn't unless it was 101.5. Usually I just took a Tylenol and went to sleep. My suggestion to you is to call your onc and let them know you are having recurring fevers that are gone in the morning. You may be fighting a low grade infection. Especially if it consistently gets over 101. They may tell you to take it easy and take some med or other.
As far as to treat or not. That is a very personal decision. No one can tell you what to do. We recently had a discussion with another member of the board about this very topic. There are so many options out there now, with new ones every day. I suggest discussing this with your onc, also. If the cells are quiet right now, they sometimes will suggest you give your body a "rest". I went through that also, as my body doesn't like chemo. We let my body rest until the scans showed new activity, then attacked it again. I wanted to keep attacking, but now I understand the chemo was too toxic for me and my onc wanted my body to heal. While I understand, I still don't fully agree with what we did, as I missed my window for a resection as a result. But I am now on a trial with very few side effects and stability going on 10 months, so I'm not going to complain!
I hope this helps. Please keep us posted on your decision.
"Don't just have minutes in the day; have moments in time."
Any opinions I give are based on personal experiences, and are not based on medical knowledge. I strongly suggest receiving medical care and opinions.