stress and labor

Is there any correlation (spelling?) with stressful situations and labor?
Ever since I left labor and delivery i've had a headache and I keep having contractions but they were starting to die down
until my sister started throwing a hissy fit and she is SCREAMING at the top of her lungs and crying and my parents are yelling back at her right outside my door.
As soon as that started happening my contractions and of course my headache got about 2x worse than before

Its just stress if you feel it your baby does too.

If it's getting bad, then tell your parents that you need to go to the hospital to be checked, its better to be safe then sorry. And the baby can feel all the stress that you do and stress can bring on labor and usually its a hard labor, try to calm down and just breath and think about how great your little one is going to be.

Thanks guys  
I ended up going out to the guest house and relaxing so I couldn't hear it and the contractions died down again.