Fever cant be broken

Qu
My 21 month old has had a fever for 4 days now... I've been giving him Tylenol and Motrin. It'll go down for a few hours n he is fine... Then come back with a vegenance and now we're back at square one.... It's so high it's causing him to have febrile seizures. I took him to the doctor today and they ran a few tests... So I have to wait a few days to get the results... I guess I'm just venting I'm 39 weeks pregnant and baby will be here Monday and I'm super exhausted... Dad's out celebrating his birthday.. haven't seen him in a couple days...I'm one tired mommy