So I closed my wallet in MultiBit and there isn't a trace of my wallet
See here first,
https://multibit.org/en/help/v0.5/help_troubleshooting.html,
Then here,
https://multibit.org/en/help/v0.5/help_support_missingWallets.html

Also, has been asked previously,
Closed wallet in MultiBit, is it gone for good??