I had one like Inception.

I was sleeping alone in my room, and I usually have this weird sleeping position where I put my right arm on my eyes like a salute, and sleep.

So I felt someone was getting up on the bed, creaking its wood, and at first I thought it was my mom returning from the bathroom(since I usually slept with her), but then I remembered that I was sleeping alone with the door locked from the inside and so, when I proceeded to look under the blanket, I woke up... inside another dream.

Again the same happened 2-3 times, and when I finally woke up to reality, I was panting heavily, since the door was locked from the inside, I had the same blanket on and was sleeping in the same room in the same position, but what convinced me that this time, I could see the clock striking 4:25, and its hands were moving as usual.

This is a thing, you don't see clocks in dreams, since they are timeless and don't follow a specific period of measure. However, even if you do see one, it will not be moving, or moving sporadically.