Morning sickness 9.5 weeks? Medication no longer helping

Maureen • Separated Momma of 3 Boys Roman 2019 & Ross 2021 & Ryan 2023

My doctor prescribed me Zofran on 8w6d cause I wasn't keeping food or liquids down. It helped for about the first 4 days and now I'm back to feeling super nauseous... Havent thrown up yet but I am gagging whenever I get the feeling of needing to throw up. Is this normal for the nausea medication to stop working/ helping? I feel like I'm dying but I'm so happy my baby id healthy!