Morning sickness has come back!!

Claire • 2 MCs in 2014, hoping for a sticky bean third time around, due Nov 2015 🙏
Hi all, 
I had morning sickness and nausea start on me at 6w, this went on until 8.5w and then eased off. I still had nausea but as long as I was eating something plain every 2 hours or so, I felt fine. This morning though was a different story! I'm 10w heading into 11w and have started vomiting and dry heaving again and haven't eaten anything all day :( is this normal??