Driveline vibration out of now where! Help!

Didnt mess with it tonight, been having some stomach issues so just doing this when i can. I did check the trans fluid on a white towel and its clean! No metal particles that i could see. Still pinkish red. Could the trans mount cause this pulsating vibration or would it be more of a steady vibration? Curious to that question but think i may change it out this weekend as it most likely needs it anyway.