Not sure what's going on ... help :(!!

Okay so I'm not to sure of when my period was suppose to start it was either the 31st may or the 3rd June. I've taken two hpt and both were negative I threw them away as soon as I read them. My period still hasn't arrived and it's never this late. Just wondering if I tested to early and if not what's going on. Haven't told my DB Incase af does turn up eventually! Any advice pleaseee