Going on Vacation... Need Greens...

Hello all~
I have been searching, calling and searching some more... I CANT FIND AN ANSWER (not one that i want anyway:) so here is my problem...
I am going on vacation from Washington state (med state) to California (med state) and driving through Oregon ( yet another med state). I have a medical perscription to possess use and grow marijuana from THCF in Washington. My problem is that i am going to need to buy my meds while i am on this vacation. IS THERE ANYWHERE (preferably a medical dispensiary) that will take my Washington card? I am willing to fax it to a verifiable dispensiary (web page or something...) so they can call the clinic and speak with the DR... Please, someone... help a guy in need for weed :)

Thanks ill be checking up....
D