Revving high when I press the clutch in to stop at a traffic light

Hi

Can anyone help me, the car has started 2 days ago revving high when I press the clutch in to stop at a traffic light. The revs go to 3 or almost 4. At times I hear the car engine almost screaming but then comes down after a minute or so at the stoplight. We have changed the battery as we thought it is the battery but battery light still comes on when stopping the car after it revs. There is a whistling noise and there is also a bubbly noise when driving.

what could all this be. Stressing out as she came to a complete stop yesterday.