Hello, I'd like to help you with your question.
Yes it is normal to have short, frequent panic attacks. It is also normal to feel as if you are blocking out sounds and other people talking.
What you may be experiencing is depersonalization or derealization. That is a common symptom of panic, anxiety and agoraphobia. Anxiety has many different symptoms that range from odd sensations to difficulty with thinking process. Although you feel this way, it will not hurt you.
Most symptoms will diminish as you reduce your anxiety and eventually they will all either go away or you will not notice them as much.
I hope this has helped you,
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