no it's not unusual. the effects of the illness will still exist because it takes a while (a week or so) for the bug to be annihilated by the penicillin and your immune system. also penicillin increases your white blood cell count and so your own body is still fighting the bug. the medication itself doesn't fight it. your body is still going through the purging process of getting rid of the bug. so you will still feel sick and tired for a while. taking too much penicillin can cause ill effects as well so try not to do that. just let it run it's course.
is it unusual if diagnosed with strep throat and yeast infection to be sick/very tired 50 hrs after beginning penicillin. female 17 in an in-patient program 12/24 got her/took to hopsital diagnosed with strep throat tx penicllin 12/25 acquired yeast infection tx monostat. 12/26 returned to the program she was told to study fell asleep while reading-was told that she is not following the rules. is it unusual for someone who has strep throat/yeast infection to be tired/feel badly after 50 hrs of tx.