Last night I took tioconazole to treat what I believe to be a yeast infection. I've used this before and gotten good results. However, this morning I woke up itching horribly, and had a fever, chills, nausea and some cramping. I've noticed in the medication information that these can be side effects, but I can't get an appointment for another 5 days. How serious is this, and what should I do?