is this morning sickness?

1st time TTC and 7-8DPO. I was feeling fine all day but didn't eat for about 6hours in between lunch and dinner. I started feeling nausea while making dinner but thought I was just over hungry. I sat down to eat and couldn't bring myself to take a bite. After about 10mins I had to run and I viciously puked 4 times accompanied by cold sweats and shivering. 10 minutes after puking I felt fine. AF due May 13.