my baby had fever for 2 days. whenever I give crocin drops it would reduce and then come again. the fever was for around 100-100.4 F. So it used to come for ever 6 hours and I was given crocin for ever 6 hours. since the day 3, the fever is coming for ever 12 hours. I had consulted doctor on the day 1 and had told to visit hospital if fever continues for day 3. what could be the reason and should I visit the hospital