Loud ticking noise coming from rear end

Ok so I have a feeling that this may have came when I was driving home at night, ran over a 2x4 and it broke underneath my car. I lifted the car, noticed a piece of wood stuck underneath, pulled it out drove around and the noise was still there...

It comes from the Driver side Rear Wheel area (maybe not wheel but suspension, I don’t know)... It happens randomly, sometimes when I make a right turn, you can hear it. When I drive off it comes... and by the way did i say it is really embarassing?

It goes
Tick....tick..tick.tick.tick.tick (as I accelerate)

Any clues?

1988 300e, I never had this problem until I ran over that piece of wood...