Nausea at 18 weeks😭

Why am I still so nauseous! I just want to function like a normal human being. I am beyond grateful that I'm pregnant, but I'm emetophobic and feeling nauseous causes extreme anxiety for me. I'm sure that can't be good for the baby. I'm trying my best to stay hydrated, but drinking liquids in excess seems to make things worse. I have tried every home remedy under the sun and I've had no luck. My doctor prescribed me Bonjesta, but that didn't help much either. If anyone has any remedies that aren't common please share! I'm desperate.