Excuse me for language erroes, I am Dutch.
Yes!! Your hard drive is about to fail!
Please backup all data ASAP and replace the drive.
Although the drive is in the beginning fase of a failure it could be dead sooner than you meight think.
The extra sound is the ball bearings of the spindle that are wearing out.
That clicking noise are the read/write heads that are shooting to the "Landing zone" as a safety precoution.
This prevents the heads to scratch the surface of the disks while they are tending to wobble due to the increase of the space in the bearing.