Hello AngelaStrand,
I am not sure about the particular plug-in you are using and what social media sites you are experiencing this issue with. If you are noticing this with Facebook, you can see what image will be used by the Open Graph Meta tags in the source code of your site. For example, looking at the source code of one of your stories:
http://nwhealthymama.com/2016/01/my-northwest-healthy-dad/
I see that the Open Graph tags are:
<!-- Open Graph Meta Tags for Facebook and LinkedIn Sharing !-->
<meta property="og:title" content="My Northwest Healthy Dad"/>
<meta property="og:description" content="Share This:" />
<meta property="og:url" content="http://nwhealthymama.com/2016/01/my-northwest-healthy-dad/"/>
<strong><meta property="og:image" content="http://nwhealthymama.com/wp-content/uploads/2016/01/Early-Fosket-Family-1.jpg" /></strong>
<meta property="og:type" content="article"
/>
<meta property="og:site_name" content="Northwest Healthy Mama"/>
<!-- End Open Graph Meta Tags !-->
So you see that the shared image to Facebook would be http://nwhealthymama.com/wp-content/uploads/2016/01/Early-Fosket-Family-1.jpg. I’m not sure if your plug-in allows you to change the settings for the Open Graph generation. You could try a plug-in such as:
https://wordpress.org/plugins/wonderm00ns-simple-facebook-open-graph-tags/
Which should let you generate tags. The question would be how this would work in conjunction with the plug-in your are using the generate the share buttons.
Hope this helps!
Scott
Angela: Make sure each of your posts has a <a href=”
https://codex.wordpress.org/Post_Thumbnails”>featured image / post thumbnail. That’s the picture that appears to be used when your posts are bookmarked.