It's not uncommon to experience an internal dialogue, and sometimes these thoughts may feel intrusive or different from your "regular" thinking voice, especially during periods of stress or anxiety. However, hearing an internal voice that's distinct from your regular thought process can sometimes be associated with psychological conditions.
If you're feeling as though you're hearing your own voice as though it were separate from your thoughts, it could potentially be indicative of certain types of conditions, like OCD, as you've mentioned. OCD often presents with persistent, intrusive thoughts that you might perceive as different from your normal internal dialogue.
In other instances, hearing voices might be associated with more serious conditions like psychosis or schizophrenia, but these voices are usually perceived as coming from external sources or as voices of other people, not your own.
However, without further information, it's hard to provide a definitive answer. If these experiences are causing you distress or impacting your daily life, it's crucial to reach out to a healthcare professional. Psychiatrists, psychologists, or mental health counselors can help you understand what you're experiencing and guide you towards the appropriate steps for diagnosis and treatment.
Remember, I can provide general guidance and information, but I'm an artificial intelligence and not a replacement for professional advice. Please contact a mental health professional if these experiences persist.