So sorry to hear about your score. I will echo what most folks here are saying and recommend you withdraw your applications.
a. The MCAT is as much a reflection of your judgment as well as your knowledge of natural sciences. A 485 and sending applications close to the deadline of primaries will make your judgment look worse. Withdraw with mature acknowledge of your failures and show signs of optimism — this may serve you well when you reapply.
b. I am a few years older than you are, so I understand the urgency of wanting to submit now. However, if you want to apply next cycle with an improved MCAT score, you need to be realistic with the time required to perform well. The previous year's average was 511 (and this seems to be rising each year). Even with consideration for the circumstances around your testing, this would be a 26 point or more increase (which >10 point increases are rare). There is a good chance you will need to dedicate a substantial amount of time to studying for a retake. Applying now will take time away that you could dedicate to studying to write a January test (If you want to be in the early applicants for next year). On the plus side, many schools love a comeback story. I agree with
@Goro's comment about the reapplicant myth. All of the points are valid about how it can be detrimental, however, people reapply and get accepted. It depends on where you apply. My state school happens to view reapplicants favorably and is vocal about this. If you can pull off a good score on your retake, it speaks to your capacity for improvement and it will demonstrate your work ethic.
Best of luck!!