Long plane rides

I posted about travel a little while back, but I can't seem to find my post. We leave this coming Monday for London and India! I had started to feel better (nausea wise) and felt a little more normal, but then nausea hit again. Couldn't even make it to a bathroom and threw up in the Walmart parking lot last night... Not sure if it was the left over Indian food (which didn't bother me a few days ago) the piece of chocolate I ate on our way to Walmart or my prenatal. Anyway I need some travel must haves to help with nausea and sleep. We have two long over night flights. All my nurse said was to make sure I moved around every hour, but If I'm trying to sleep.. That's going to be hard. I'm only going to be about 15 weeks during the trip. Any over the counter meds I should get? My husband has never been out of the country and has only flown once so he is pretty anxious. I ran out of lavender oil too, but may have a little bit left some where. Are the compression socks nessecary or helpful?