Early pregnancy sign?

9DPO with flu like symptoms

All day today and then 2 days ago (not yesterday which is weird) I have been experience horrible flu like symptoms.

They consist of:

- exhaustion

- All over body aches (can’t do anything) and I have no strength

- Slight nausea

- Constant headaches

- Cramps (no cramps today though)

- Constant chills - it’s a very warm day today and I feel as if I’m absolutely freezing cold.

I took a pregnancy test thismorning and I am pretty sure I saw the faintest line (still likely too early to tell)

BUT, has anyone experienced this prior to a positive test?