I recently had my third BCG installation for high grade NMIBC, following two turbts (tumors removed in first, no residual cancer in second). With this third treatment, I had slightly elevated temperature and was super fatigued, but felt fine the next day. Is the absence of side effects any indication that my immune system isn't responding to the BCG? Of course, I have three more to go, and I understand one's reaction can change with subsequent treatments. Is there research on this topic to anyone's knowledge?