I have the same problem

Hi Bridgit and welcome to the Plumbing pageat at AskMeHelpDesk.com. You piggybacked on an a 2 year old dead thread so I gave you one of your own. In the future, before you post, look in the upper left hand corner for the date.
I deleted your E-Mail addy. Not too good a idea to give your full name or personal information on the net.
Do you hear any gurgles or bubbling from the washer standpipe? Please post back with more details. Regards, Tom