Naseua & Vomitting on Period?

So nausea is not usually a symptom I experience. Even on my period the symptoms are just cramps, acne, and backache. A couple days before my period started, I had to throw up in the AM in the middle of brushing my teeth. It was weird for me to randomly throw up in the morning during my normal routine but I didn't think much of it and just went about my day. Today, on day 4 of my period, I woke up feeling violently nauseous and have thrown up twice since waking up. I have no fever or other symptoms of the like. Just keep feeling sick to my stomach out of nowhere and then throwing up. Has anyone ever experienced this on your period? Obviously I'm not pregnant or else I wouldn't be bleeding so much but this is just weird.