Mike Dz

After not driving for 3 days I tried to start my car and it wouldn't kick over. I cranked but just wouldn't start. On one try it started but then died after a sec. After about five minutes of trying it started and ran with no problems. No problem since then.( 4 days) I know people have posted with similar situations. Any ideas. Some info Temp was 43 degrees about 1/4 tank of gas. one note I not sure if i heard the fuel pump, but i could be wrong. Thanks in advance.
Mike