Anyone felt like this?

Anna • Baby #2 on board
15dpo af should be here today no sign. Since 9pm last night I have felt severe nausea it kept me up most of the night. Vomited about 5 times since then and it's not easing up. Partner is fine and we ate the same stuff yesterday. Nearly 16 hours of this! Bfn on test. Can I just assume I have a virus as my body is cold but face on fire 🙁 lower back is also very painful