Migraines and nausea

So, for the last few days I had been suffering from a pretty bad migraine and was nauseous with occasional vomiting. Overall, I just felt bad, so I called the dr. He's on vacation, so my nurse advised me to go to the ER to be safe, since I was having the headaches. I went to the ER, and they didn't tell me what was wrong or anything. They just gave me fluids and some sea sickness medication. Well, I don't feel nauseous anymore, and for the most part, the headache is gone. So, I'm wondering if I was a little dehydrated. I would've like to have known what they thought. I still don't feel 100%, and can't wait for my dr's appointment this week to discuss it with him. Baby was fine the entire time. She was flipping around in there, but I feel like I'm weak. Maybe I'm not getting enough nutrients. I don't know.  I'm thankful nothing bad is wrong (surely they would have said), but I'm a little frustrated . Just wanted to rant a minute.