2012 Volvo c30 , quick noise while revving after turning car on.

[Ivano2937]

Hello everyone I have a 2012 Volvo c30 w 74k miles that as of lately has been making a small noise after I turn on the engine and I put it in drive and drive about 15 mph I hear a small clunk? And feel something around the pedals. It feels like something rotates and hits something .
Keep in mind after the initial noise happens I can drive the car as much as I can and it won't happen again (the clunk) . Until I shut the car off , and turn it on again after about maybe 10 mins.. I'm so confused .... Will probably take it in the shop sooner than later...

Sorry I can't be more descriptive about the sound.

Thanks for any advice .