$dt_from = new \Carbon\Carbon();
$dt_from->startOfMonth();
$dt_to = new \Carbon\Carbon();
$dt_to->endOfMonth();
$reports = Report::whereBetween('report_date', [$dt_from, $dt_to])->get();
$queryBuilder->whereRaw( "last_checkup_date >= DATE_SUB( CURDATE(),INTERVAL 10 DAY )" );