Hi Patricia, I am a 24 year survivor of Hodgkins Disease. I was clean for 18 years, then one morning woke to find a sore spot behind my ear. Round #3 started just like that. So my chance of recurrence was 0% a week earlier, and 100% on that morning. Go figure. Lots and lots of things go into whether or not you will have a recurrence. An equation I cannot and do not even want to know. Just plan on living a long and happy life with no problems, then if you do have an unhappy moment along the way, worry about it then.
As for Chemo Brain, it's been 24 years since I had it, and yes, I have symptoms today. They don't keep me down, but it's aggravating for sure.
Here's hoping for 10 more good years!!