First baby...jury duty, sat for two days...she was born the next day...FOUR weeks early!
Second baby...tornado sirens went off at 9:00 pm...the next morning woke up to contractions 5 min apart...he was born that night...THREE weeks early.
So needless to say I doubt those two things helped me "speed" up labor...I think I was destined to have my babies early.
However, I will say that my dr did say the hospitals are EXTRA busy when the barametric drops...so pray for storms!
Best of luck...enjoy your last moments of freedom!