IMO, you should not hurry with retaking the test. If you are confused, anxious and not mentally ready to get yourself together, sit down and put efforts, it is not worth doing it.
The process of introspection and self-evaluation requires that you are calm and focused. Usually, after getting a lower unexpected score, it takes some time till 'it goes'. So first- 'Let it go'. Once you feel relaxed you can sit down and craft a strategy.
It is better to start assembling your application package next year more carefully, rather than hurrying under pressure to retake the test knowing that you do not have neither time nor nerves to do so. IMO, one month under such circumstances is not enough to significantly improve the score.
"Commitment is more than just wishing for the right conditions. Commitment is working with what you have."
