DD (age 2) started getting high temperatures 9 days ago. After 6 days we saw the GP who diagnosed tonsillitis and prescribed penicillin. So she's now been on the meds for 3 days. Today is the first day her temp hasn't gone above 38 (it's currently 37.7, which doesn't count as a fever but still isn't normal for her) but she's really not herself. In particular, she won't eat anything and she's just had an episode of diarrhoea.
Does this sound like a normal side effect of penicillin? Also shouldn't her temperature have gone back to normal by now if the meds were working? Wondering whether I should call 111 today, take her back to GP tomorrow, or just wait it out.