My 6 yr old son has been running a fever of 103-104 for about 24 hours now with no other symptoms except complaining of his legs hurting. I don t see any redness or swelling in them though. Tonight before bed I missed his Tylenol dose by 30 min and it spiked to 105. I gave him Tylenol right away and he vomited it back up. So we put him in the bath and gave him a Popsicle. It s down to 104.5 now. I am at my parents house and do not have children s ibuprofen and I am almost and hour drive from the closest place to get some. Can I give him a dose of adult Ibuprofen?