Sick for long after drinking

Hello, I’m wondering if someone can give me some insight. Aug 17 I had three and a half drinks and I never drink and they were strong. I had cancer a couple years ago and my body is very sensitive. I’m also quite small so 3 drinks is a lot for me. Im 35yo female. I was very hung over vomiting and diarrhea all the next day with extreme fatigue. Moving forward in the week I still struggled with dehydration and nausea and fatigue. I got an IV a few days after and took Zofran off and on. Fast forward to today a full week later I am still nauseous and extremely fatigued. I also feel dehydrated even though I am drinking Pedialyte. Has anyone experienced this before? Or have any suggestions? Thank you