Exes nudes

So I was on my husbands computer trying to apply for jobs and I had to go into the picture part and upload my resume, and when I click on it , HUNDREDS and I mean HUNDREDS of  his pervious exes nudes were on there. And some of them were only a few months before we got married. I'm 11 weeks pregnant and I don't know if I should bring it up to him? Let it go? Delete them and see if he notices? Ugh. Help.