First symptoms or virus?

Steph

So has anyone had insane nausea w vomiting and bad diarrhea as early as 4 weeks? I am two days late now but still no bfp. Wondering if this is a first symptom... or if i have some stomach virus or flu. I only ever experienced some nausea (with no vomiting or diarrhea) with my first two pregnancies. Trying to wait another few days before I test again but this is terrible.