What should I do if my visa has expired in Thailand?

An individual has an expired visa as of January 14 and believed it expired on February 14. The community responded with advice, indicating eligibility for an extension might still apply, along with payment of an overstay fine. It's recommended to contact immigration as soon as possible, as fines can accrue for overstays, which are typically ฿500 per day. Previous experiences shared highlight that despite overstays, extensions can be granted after fines are paid, and one person's experience varied significantly from the usual fines, suggesting complexities in immigration rules.