Hey, I've been there....
I had a 5 hour labor with my first, followed by two 3-hour labors with 2nd and 3rd.
For the fourth, we ran off to the hospital THREE TIMES and got sent home. The third time they sent me home I burst into tears right in front of the doctor and 2 nurses! Finally, my water had broken at home, so they we went down and they had to keep us...
Once I got settled into the room, they checked me and I was dilated at 4 cm... but my labor started almost immediately after that and *drumroll, please* after a TWELVE MINUTE, extremely intense labor, I had my daughter.
So, good thing we ran right down there that 4th time, or baby would have arrived at home, or in the car, or someplace else interesting!
Hope the next time it isn't a false alarm, and you are holding a lovely snuggly perfect baby soon!