Hi,
Welcome to the forum. I am glad to help you out. A dilated eye examination should always be done prior to doing the lumbar puncture to rule out any papilledema as there's a small risk of herniation of the brainstem resulting in the coning and it can result in sudden death also. Brain MRI with gadolinium enhancement is the study of choice for all patients with Pseudotumor cerebri as it provides sensitive screening for hydrocephalus, intracerebral masses, meningeal infiltrative or inflammatory disease, and dural venous sinus thrombosis. These are the common ailments which need to be ruled out before thinking of pseudotumor cerebri.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.