Hi Brenda,
It’s not good. :/
Let’s run first an Apple Hardware Test.
Follow these steps and let us know what it says.
Shut down your Mac. Turn on your Mac, then immediately press and hold the D key on your keyboard. Keep holding until you see a screen asking you to choose your language.
When Apple Diagnostics knows your language, it displays a progress bar indicating that it’s checking your Mac: Checking your Mac takes 2 or 3 minutes.