MY teacher thinks i cheated.?

So she just said "OK". Is that it? If so then she's agreeing that you haven't cheated. Of she said you were reading from somewhere, ask her to show you where.

Cheated on what? Why does she think you cheated? 

Your teacher asked, you answered, she said OK.

That's it. You don't need any "advice" except perhaps not to waste your time and ours posting about a total non-event.

If you are doing online schooling why would you need to be looking around to see if anyone is looking at  you? 

Let her think what she thinks. You know the truth.

That story is hard to believe. If you just glanced around your room a couple of times, the teacher would not have asked you that. If you were looking down, or staring fixedly at something other than the camera, yes, she thought you were reading. Have you done this before? Do you usually do well at reciting a poem? If you usually do well, she probably doesn't think you cheated. But if you usually stumble and have trouble, and all of a sudden, you're whipping through the poem, of course she'd be suspicious. 

Recite poems in your head a lot, then practice in front of your siblings or cousins, or best friends unless you don't have any of those either, then clear your throat (scope works for me) and make sure the light isn't right in your eye or you might go blind and have to say the poem by memory.