I'm also about to start my second round of 4 chemotherapy treatments on the 30th of December. My Oncology Doctor explained that the first 4 rounds is 95% successful, the second round is really just ensuring that any traces of cancer are destroyed.

Challenges I faced (still facing) are pain,
My operation was on the 16th November and it's really only over the last 5 days that I've noticed my energy levels coming back to normal. Still dealing with pain, hurts when I sneeze or cough through my left side of my chest. I experience dumping syndrome - can't eat alot of sweet food. Some food like rice by itself (eg Sushi) is a no no, because it blocked my throat completely and I had to cough it up to get rid of it, not the nicest of things to do. My advice is stick to creamy foods for a start. I've now progressed to eating bread but when doing so I drink water after a few mouthfuls. But the biggest piece of advice is to..
chew chew chew!