hrm, I had that happen and I had not tightened up the gas cap. Also, your gas tank may have a small leak, but I would put more in it and put a piece of cardboard under it and run it in one spot to see if you can trace the leak. It might be something very simple.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
