Ear ringing after ear infection


I am a little worried I hope you can help me.
I had an ear infection I finished two courses of antibiotics a week ago the infection is gone but my ear is still constantly ringing. It also feels plugged I can't hear properly. I can't sleep and it is driving me crazy.
I have seen my GP 3 times during the infection they said it should get back to normal with time. Shall I go back and get it checked?

Many thanks