Too early?

I'm 4 days dpo/having unprotected sex and I'm experiencing cramping, tender breasts, gas, bloating, headache and nausea. This is very unusual for me. I've read other women saying they had similar experiences and got a bfp. Am I crazy? Or is it actually possible that I'm pregnant and feeling it already?

Well is a bit early for pregnancy symptoms of you are only 4dpo but you never know what can happen .
Good luck!

Thank you!