I had bladder cancer also, did not penetrate the wall but it was a rare type of cancer caused from radiation I had from a metastatic endometrial cancer I had growing on my outer colon and hip bone 20 years ago. That type of cancer I was told tends to come back early so I go for blue light cystoscopies every three months. I had chemo for 6 weeks once a week and then once a month for a year. I did not get BCG treatments but two chemos into the bladder. My last one was in April. I was always fatigued. I thought this would improve once I stopped chemo but it did not. I went to my primary care and told her how I felt. She ordered blood work and found 4 red blood cell tests were low and diagnosed it as anemia. I was told to take over-the-counter medication for a month. I researched a lot about anemia and discovered it took about three weeks of taking iron before I saw an
improvement. That's just what happened. I realized in week three how much better I was feeling and now I'm into week five and going for blood work this week to see the results. My oncologist brushed me off when I mentioned fatigue. That's just not their specialty so I suggest going to your primary care doctor and have her test your blood. Good luck and God bless.