Early pregnancy symptoms??

So I’m 11 DPO today. I tested yesterday & today and got a negative, which i sorta figured would happen. But Anyways, I haven’t really had many symptoms except for lower back pain and being super emotional, until today. Everyday At work i notoriously eat a bag of cheez-itz. Roughly 10-15 mins after I finished them today I got insanely nauseous, and end up having to run to the bathroom and throw up. This has never happened before, especially not with how much I usually LOVE cheez-it’s.

So I guess I’m wondering, did anyone else have this symptom before they tested positive??

Thanks :)