Hey girls! Can you tell me how stretch marks or when the skin ripped o…

Hey girls! Can you tell me how stretch marks or when the skin ripped on my belly in the first hours after they appeared? Do they look the same, or differently? I had a terrible itch this morning, when I looked there was a horizontal stripe of redder skin like after a bug bite, under the skin it feels like some kind of small bump, as long as the redness and itches right away, it's awful. When I tilt my body slightly to the side, that spot hurts a little bit.