Thank you for reaching out! Let's see how we can help.
So it sounds like you're experiencing a ton of discomfort during masturbation
I'm sorry that you're experiencing this. Just to make sure, have you ever successfully reached orgasm before? I'm asking just to see if we can discuss what could have possibly changed that has made it more difficult to do so.
You are correct that our bodies can experience discomfort or other physical conditions based on what's going on in our heads (which can then create a stress loop where the thing making it more difficult for you to orgasm and the difficulty itself are piling together to make your mood worse). Does this sound like what you're going through?
I want to highlight the fact that you're experiencing burning with penetration as well as hypersensitivity. Ultimately, I'm not a doctor, and I do suggest that you see one (preferably a gyno). It sounds like you could possibly be experiencing a medical issue. Let us know if you need help locating one/going over options.