As mrsb said, if you are worried get your eye/s checked out. When you say 2nd one in a week - do you mean it happened in the other eye or same eye?
I started getting that back in 1989 after diagnosis - it happens every now and then so I don't get bothered by it. Sometimes I don't know it until someone says "what happened to your eye?" Once I had one and happened to have an eye exam scheduled, the doctor wasn't impressed and said it will go away. He said that can happen for various reasons.
However, as my signature says: "Instead of wasting your time worrying about symptoms, just get it checked out" - Nieca Goldberg, MD
"Instead of wasting your time worrying about symptoms, just get it checked out" -Nieca Goldberg, MD