Unfortunately, we aren't alerted as to whether or not releases are accepted, nor when they become available on Pandora's site. Since Pandora is a curated catalog, it's ultimately their call on what they'll accept. If your release is approved by their team, it will be added to the Music Genome Project, which may take months to complete. The Music Genome Project analyzes all different aspects of your music so that your songs are placed in appropriate radio stations. It's one of the things that sets Pandora's radio apart from other platforms.
That being said, there are a few things we can recommend that will help with finding your content.
1) Search for your music on Pandora's free service. You may search by artist name, album name, or track title. If it's there then you made it!
2) You may try claiming your artist profile via Pandora AMP: https://amp.pandora.com , which will link your Pandora listener account with your artist profile. If you don't find an artist profile for yourself, then your content isn't yet available.
3) You may submit an album directly to Pandora via https://submit.pandora.com , and they'll send you updates as your release goes through the process. Unfortunately, you may only submit one album at a time this way, so pick your most important release!