I have a double sink in my kitchen along with a dishwasher and garbage disposal. If I run water in one sink, it backs up into the other sink- same result regardless of which sink I run water into. It takes a good couple of minutes before the backup happens if I run either sink. If I run the garbage disposal, the water immediately drains. If I turn the water back on, the sink starts to back up again after a few minutes. This just started today. Do I have a garbage disposal problem? I don’t think it’s after the disposal because running the disposal clears it- but I was able to do this 5 times in a row and it still backed up. I also noticed the sink not directly connected to the disposal (water drain goes to the disposal, mouth of the disposal in the other sink) makes a glug sound that started happening At the same time as the backup. Any ideas? thanks!