Essential oil or Roll ons

Hello mummies. Can i know what essential oils or roll ons we can use for first trimester? My morning sickness has kicked in and it get worsen every night that i had to take anti vomitting meds for it 🤢 I try not to depend on the meds la so was thinking if theres any oils or balms that can be used to ease the morning sickness. TIA! ♡