Can't think and talk properly. Will wrk?

I have been diagnosed 3 years ago with OCD and have taken various medicines since then. I had compulsive checking issues earlier along with repetitive intrusive songs stuck in my head which won't allow me to think and talk clearly. My checking issue has been resolved and I have stopped my medication an year ago but I am still struggling with earworm syndrom and repetitive compulsive songs have stuck in my head which won't allow me to think clearly, talk clearly and even study properly. I am frustrated with continuous songs being played in my head. Various songs or music or a tone is stuck in my head which disturbs me a lot. I cannot think of different ways in which I can respond to a person while conversing. I get stuck in one to two things and make the person talking to me feel irritated. I have been meditating for 4 months now but still I feel I can't think and speak clearly. I request to whosoever reading this please suggest me how to think and talk clearly. Any suggestions will wrk