epsom salt bath stop labor?

I was going to try taking a bath with epsom salt to help the sciatica pain but when I Googled it to see if that would even help I read epsom salt stops contractions, I'm almost 39 weeks and I believe everything happens for a reason and baby will come when ready so I don't want to prevent labor from happening if it's going to happen soon since at this point it is safe if labor starts and I'm not trying to induce I'm just letting things happen on its own. anyone have any idea about this? or have you taken an epsom salt bath before and still went into labor on your own shortly after? I been having mild cramping and Braxton hicks so again I don't want to stop anything real from happening.