My transmission light is on but everything seems okay

What is your question?

I went to move my car and started it and noticed that The check transmission signal came up on my screen. And when I put it in drive the d is flashing. When I pull the plug to check the transmission fluid under the hood it looks like it's empty in there but it doesn't come with a dipstick so you can't really check it. I cleaned the oil dipstick and used that but nothing showed up on it. I added three quarts of tranny fluid and still nothing showed up. I haven't driven it anywhere since then but prior to adding the fluid it seemed to drive fine and nothing seems to be wrong with the transmission. But after adding the fluid the light was still on. I'm not sure if you're even supposed to see fluid in that little reservoir or not. I don't want to drive it anywhere because I do not want to ruin the transmission if there is something wrong with it.

How long has your 2015 Honda Civic had this problem?

The light just came on a couple days ago.