I was diagnosed with pseudotumor cerebri. I just started the meds friday. Is there anything I can do to help with the headaches until the meds kick in?

Maybe. Your headaches are likely secondary to increased intracranial pressure and other than analgesic meds, such as narcotics, you likely will have pain for a while. But during this time, a low salt diet will help, and a decrease in fluid intake may make a difference. Try elevating your head when laying supine. Hope you feel better.