Check if custom post type has entry

Good day,

Very good plugin my question is how to check if the custom post type has content? Currently here is my code:

<?php wp_reset_postdata(); // reset the query ?>
<h2 id="virgina">Virginia</h2>
<?php $custom_query = new WP_Query( array( 'cat' => 27, 'post_type' => array( 'post', 'trainer' ) , 'posts_per_page' => -1  ));
while($custom_query->have_posts()) : $custom_query->the_post(); ?>

	<div class="row"<?php post_class(); ?> id="post-<?php the_ID(); ?>">
		<a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
		<div class="location"><?php the_field('area'); ?></div>
	</div>

<?php endwhile; ?>

I just want to check if there is a content for category 27. Note the code above is already working but client want to add more and wont display until there is a post to the custom post type category.

Thank you in advance.