So I take a shower and towards the end of it I hear gurgling coming form the toilet. Get out of the shower and it's slow to drain (the shower). So I plunge it, clear it - then the water drains completely out of my toilet bowl! Flush, drians again - 2x. Finally stopped draining. Or so I think, had to leave for work. My research leads me to suspect a clog in the vent stack, make sense? What can I do on my own before calling a plumber?
Please just post to the group as I'm having email problems, thanks in advance.