blood test and a chest x-ray can confirm valley fever. Get it. I was diagnosed with Disseminated coccidioidomycosis (valley fever in body tissue other than the lungs) about six years ago. It never goes away. Your immune system will eventually get it under control with the help of anti fungal medicines but it is a life long illness.
Get a blood test ASAP. Hopefully results are negative but if not the sooner you can start an antifungal like diflucan or sporanox the better. I was accurately diagnosed within two weeks of the first symptoms (major swelling of the ankles, knees, and wrist) and still struggled with daily duties for six months.