I quit smoking five days ago and had sex 11 days ago. Over the last three days, I have had nausea, acid reflux, breast tenderness, cramps, and increase urination. It is still two and a half weeks before my period is due, so I assume it is too early to test for pregnancy. I have heard that many of the symptoms I m experiencing could be due to quitting smoking withdrawal symptoms. Which is more probable? Am I pregnant or withdrawing?