@Kerri *********
face it you're far from the first person who missed the window of opportunity to file a 90 day report.
When you get back to the area where you live go to your immigration office file a 90 day report, take the failure to file on time fine of 2000baht, sign the log book, get the stamp in your passport, FILE a 90 day report and you're good to go
The fine is 2000baht whether you're 8 days late or 8 months late, it doesn't go up.