WP_Query taxonomy terms add one more post - wordpress

Question

I'm working with taxonomy page order by terms whit different WP_Query. AT the last of every loop something add a "post" that have page title and info from the before post. Very strange thing.
I don't find nothing about this (neither I know how to search this). Thanks por your time. My doce is this:
<?php
$the_query = new WP_Query( array(
'post_type' => 'intervencion',
'tax_query' => array(
array (
'taxonomy' => 'especialidad',
'field' => 'slug',
'terms' => 'bariatrica_ok',
)
),
) );
while ( $the_query->have_posts() ) : $the_query->the_post();?>
<?php $meta = get_post_meta(get_the_ID()); ?>
<div class="col-lg-3 col-md-4 col-sm-6">
<div class="ficha">
<?php if ( has_post_thumbnail() ) { ?>
<?php the_post_thumbnail('thumb_intervenciones', array('class' => 'img-responsive')); ?>
<?php } ?>
<h2><?php echo get_the_title(); ?></h2>
<p class="condiciones">Todo</br>incluido por:</p>
<p class="precio"><?php echo $meta['intervenciones_precio_intervencion'][0]; ?> €</p>
<a class="ficha-btn" href="<?php the_permalink()?>">Solicitar cita</a>
</div>
</div>
<?php
endwhile;
wp_reset_postdata();
?>
The result at the bottom of the list is:
enter image description here