Hello
My car's just broken!!!

I just climbed a steep hill and may have (but didnt hear anything) grounded at about 10mph as the road became flat again. Immediately after I could hear a grinding noise which sounded like something was scraping along the ground (but pretty damn loud!)
I stopped to look but nothing was hanging down. So drove home immediately. Sound doesnt match engine revs and sometimes dies down. Is there a problem with the transmission???
Anyone had this happen??? I drive a 51 plate facelift 210 S3.
Johnny