well first: strip the extruder down and clean the hobbed gear as it will now be clogged with plastic.

Then tell us what printer you have, what print settings you were using - anything you cn think of - the more information we have the better the chance we might be able to correctly answer your questions :-)

It's like going to the doctore and saying: 'I am Ill, please cure me.'
After 10 minutes of asking you questions and examining you - they might have an opinion. But first they need lots of information.