Is it possible for someone to watch you through your webcam?

I'm literally panicking and crying and shaking rn because normally I have my computer webcam covered with tape but I had to take it off for a web meeting and my camera needed to be on. So I showered and changed into my room with my laptop facing me. Now my sub concise was that something was over my camera, and when I looked up it wasn't. Now, I know that if the light is on next to the webcam, that means it's on but it wasn't on. I looked online everywhere to see if anyone can spy on me through my webcam. Some were sying about a green led light and I saw one and now I'm crying. I'm so terrified, can this happen?

Is it possible for someone to watch you through your webcam?
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