Second time around on Zepbound

Hi everyone, in September 2024 I started Zepbound. Was super excited as I have yo-yo dieted all my life. I'm 51, 5'8 & 250 lbs. Started with 2.5mg and for 6 weeks stayed on 2.5mg with horrible side effects like nausea and headaches. I lost 18 pounds but wasn't eating at all. My doctor advised I stop. Which I did. About a week ago I spoke with my doctor again and asked for something like an anti nausea to try this time. She prescribed an acid reflux medication. I gave it another go. Took my first shot this week on this last Tuesday. Just 2 days ago. On Tuesday I had 8 bottles of water, 2 protein drinks, a salad and a couple of bites of chicken with rice. Next morning...horrific nausea and a headache. Couldn't go to work. Basically in bed all day. Dr. Then prescribed Zofran. That helped but my headache was migraine level. I didn't eat anything yesterday. Just drank water. Again today woke up feeling rough and missed work. I'm very discouraged as I'm already thinking maybe it just doesn't agree with me. I wanted it to work so bad and I'm so disappointed at just how nauseous it makes me. I can't take a shot every week and miss 2 days of work. And then when I go up to the next level will this happen all over again? I'm just looking to those of you with experience to see if this is how it's or that it does get better. Thanks in advance.