Early signs of pregnancy?

Sara • 💍07/21/2018 • 👶07/08/2019

I am 7DPO and started having lower back pain this afternoon.

I didn’t have much of an appetite all day but my husband insisted I eat before bed. I ate half and felt sick and vomited.

I never get back pain and can’t remember the last time I vomited sober..lol.

I decided to take a test even though it is early and got a BFN. My breasts feel normal. Only other odd thing is that I felt fog brained doing my work today.

Any thoughts? Similar experience etc?