Car making cracking noise when i accelerate

What is your question?

When i shift into 1st, 2nd and 3rd gear and start accelerating, I can feel a vibration from the bottom of the car and hear a loud cracking noise for a few seconds and disappears, this only occurs when i accelerate at the beginning of the gear shift and doesn't occur when accelerating at the same speed.

How long has your 2005 Mazda 3 had this problem?

A few days