Play around with your barrel adjustors and you should be able to get the shifting smooth again.

If the rear derailleur hesitates shifting up, you need to add some slack. Turn the barrel clockwise 1/4 at a time and try again.

If the derailleur hesitating when shifting down, you need to increase line tension. Turn the barrell counter clock wise 1/4 at a time, then try again.

You should find the barrel adjustor for your front derailleur on your shifter. You literally don't even need to get off your bike to make a successful adjustment.

if tinkering with these settings doesn't fix your shifting problem, maybe you bent something in the rear.