If you can DJ and be in such noisy and chaotic places, you are doing great. You may be overdoing it with some of those environments.

You should try not to pay attention to occasional symptoms like the sense of dizziness. If that symptom persists for days, it is something to consider. But, do not use a short term to consider symptoms. You say you cannot always tolerate noise and speech but you do not appear to let that stop you. Accepting that some symptoms will come and go, likely for the rest of your life, will reduce your anxiety and other distractions.