I unfortunately have some bad news. I made a Genius Bar appointment and took my phone into the Apple Store for them to look at it. They said it is most likely a dust particle that is stuck under one of the lenses. How it got there in the first place is beyond me, but it was confirmed this was not a result of water/fall damage. The only way they could potentially fix the issue is if I paid $200 for them to take apart the lenses and see if they could clean beneath them and solve the issue, but there was also a possibility of them doing this and it still not resolving the issue, so I would be out $200. Only other options are to do nothing, or see what your current iPhone’s trade in value is and get a whole new phone. Sorry to have to relay the bad news to you, I’m sure you’re just as disappointed as me but I do find it odd how there are other people who are dealing with the same issue as me.