Share 'Worried about a fast birth'

I am pregnant with my 4th child and my 3 previous births were all pretty short. My first birth was just over 8hrs..my second, which was actually pitocin induced was about 5hrs from start of pitocin to birth and my 3rd was a little over 7hrs.  I know every labor is different but I worry that the next labor will be even shorter. I know to some, it's a crazy thing to be worried about, but this will…