problem with media URLs after SSL installed.

After having my 2nd (yearly) SSL(1st from IMH) installed on engravedtagsandnameplates.com, I noticed that while the padlock and the green https:// were both there, there was a gold triangle over the padlock. I went to whynopadlock and discovered that it had to do with images that, for some reason, had changed back to http:// - so the pages are not secure. I was able to fix some of them by going in to the back end of the page and manually changing the picture url back to https://, but on other pages the pictures aren't added the same way. Now I'm stuck. Can someone help me?