Fever and only 5 weeks pregnant

Au

I’m about 5 weeks pregnant and I’ve been running a fever all weekend long of around 100.6-99.0. I take Tylenol and the fever breaks but then inevitably the fever comes back and I have to take more Tylenol. I’ve been resting and drinking tons of fluids. Is it ok to be taking all this Tylenol? Should I be doing anything more to help keep this fever away??? Please help I’m so nervous to be running this fever this early in pregnancy.