I tried them this time around because I was having all nausea and vomiting at all random times of the day. I found th help about the forst couple of days but then I threw up while wearing them and after that they didn't seem to help. Also like some pp's have said, they slip a lot so it's hard to keep them in the right place. And also I found that after 2 days or so or wearing they hurt and made sore red indents where they'd been pressing which hurt the nerves going into my hands. But I did have to wear them almost 24/7 apart from sleeping so that may be why. Always worth a try
In my last pregnancy I used ginger root capsules morning and evening and that really helped. I was still throwing up but nowhere near as frequently. So maybe give that a go instead or as well as the bands
good luck!