Mums : Did you ever use the antisickness bands? Did they work for your sickness?

I used them with my first pregnancy and they were fab, i am now 5 weeks pregnant with #2 and feeling dodgy and worried i will get sickness as i have a phobia of vomiting, is there anything i can do to help it? do these bands really help with the early sickness? Ive not had it before so i dont know what to do or expect! Thanks