Well, I ve had my period back on the 9 of August. It was normal from what I could tell. On August 16 one week after, I vomited. And I ve been doing so everyday since. It s only once a day, I m really tired and I get light headed through out the day. My question for you would be, is it normal for someone to start vomiting one week after they started their period? Or is this something else?