Exploit taking me to perfectmatch

Hi,

I have a blog at https://www.bloggingwv.com/

Recently, I have noticed that the occasional random link I click on in my blog opens up a page to perfectmatch dating website. And occasionally it will open up a popunder in a new tab to the same site.

I’m pretty sure it’s an exploit of some kind, but I am not sure what I should be looking for to fix it. Has anyone else had this experience? I haven’t added any new plugins recently.