Walking, stretching, rolling from side-to-side on the floor or on a yoga ball, doing very mild yoga or pilates, hot baths, massaging the zone with hot oil (helps the hands slip over the area easily), hot green tea (unless you are throwing up), walking again, bouncing up and down on the balls of your feet, bouncing on a yoga ball, bouncing more, keep bouncing, walk some more, use a heating pad...
When all else fails, I wait 24 hrs before heading out to ER...most often it breaks up by then .
I also keep a stock of injectable Gravol (motion sickness meds) that I inject if things get really bad (I go into waves of muscle contractions and violent vomiting), the Gravol calms that right down...I cannot eat or drink anything when I get a blockage so I dehydrate quite badly, that is why I have the 24 hr limit...If I can manage to drink sips of fluids or hot tea they I try to hold out a little longer.
Generally, ER only watches, waits and put me on I.V. (I hate I.V.) with some sort of similar antinausea drug or muscle relaxant...Things that I can do to and for myself (other than the I.V.)...so unless I am really very scared, I don't bother.
I am also not stupid.
If I spike a fever, get so dehydrated that I cannot care for myself or feel things getting worse then I go to ER whether I want to or not.
Hope that some of this helps.
Sharon