They're called "Pennies From Heaven", and the poem goes something like...

I found a penny today
just laying on the ground.
But it's not just a penny,
this little coin I've found.

Found pennies come from heaven,
that's what my Grandpa told me.
Grandpa said, Angels always toss them down.
Oh, how I loved that story.

He said when an Angel misses you,
they toss a penny down..
Sometimes just to cheer you up,
and make a smile out of your frown.

So don't just pass by that penny
when you're feeling blue.
It may be a penny from heaven,
that an Angel's tossed to you.

I think someone's trying to tell you things are goigng to get better. :D