water leak...driver side carpet is wet..

[gitchies]

just started noticing this problem...when it rains, the water comes in the driver side...just under the dash, where the obd plug is....ony the one side
i was reading this could be a problem from the sunroof plug? i originally thought maybe the windshield? i did notice the windshield had been replaced about a year ago....just trying to figure out the lines for the drain maybe they're plug or something....i hope i can find a small fix, rather then having to take the headliner down and more $$$$$
any input would greatly appreciated...