Migraine while pregnant

Im at work with an awful migraine and don't know what to do. I still have 1.5 hours here then a 40 min drive home :( I use to take depakote as a preventative but can't anymore because I'm pregnant. I had maxalt to take when I got a migraine but I was told it's not good to take whole pregnant and stopped carrying it in my purse. This is terrible and idk what to do. I've ate and drank, tried a little coffee(to try caffeine) cold wet cloth on my neck. Idk what else to do. Any suggestions that are safe during pregnancy?