implant crown fell off..

[skipaheartbeat]

Hi. I have several implants fitted due to congenital hypodontia. These range from 10 years to 2 years old. The crown from a 10 year old implant has just unscrewed it's self from a back molar. The implant itself feels fine. Also the crown and screw both look undamaged. However I'm concerned with it being the weekend and being unable to get my dentist, that the gum will close up over the implant entry at gum level. Can anyone advise or reassure this is ok for a few days? Thanks in advance.