Just lost my Entire gmail inbox! Any ideas?

[Wayne Brooks]

Hey guys, not a RE question, but I need some help.   I have a few email accounts, but just lost my entire in box, sent mail, everything, on my main gmail account. Everything gone, prior to 3:04 eastern time this afternoon, emails coming in now seem to be okay.   On both phone and IPad, so I assume gone from everything. Two other gmail accounts, and an old aol account are fine.  Any ideas?  I'm quite careful about spam and such.

Thanks for any help.