After dealing with a really stubborn bout of cystitis over Christmas and struggling to actually get an appointment at the doctors I finally managed to get myself to their out of hours walk in clinic yesterday and was prescribed antibiotics. The doctor said he would prescribe a 7 day course of 2 a day. Fair enough and as expected. Then he said 'you may feel better after three days, in which case you can stop taking them .' Am AIBU in thinking I should ignore this, regardless of whether I feel better , and just take the full 7 day course? I always thought taking half a course was asking for trouble but please correct me if I'm wrong.