Can I be pregnant is it too early?

Cy
My period ended right before, I had unprotected sex with my husband 8 days ago and every day after that. I have been feeling sick (I NEVER throw up but I did alot), lightheaded, moody, and my temp is a little higher than normal. I took a pregnancy test it was negative. Is it too early to take a test? Can I be pregnant but I gotta wait a few weeks? Should I wait until next month? I'm so nervous I don't know what is going on with my body.

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