Could i be pregnant??????????

After we had sex the next morning when I went to the bathroom and wiped it was a pinkish mucus lookin stuff on the toilet paper? Is dat a nother sign of being pregnant bc I had jus come off my period? And I started having all the symptoms irritable hotflashes nausea dizzy headache a weird feeling in my stomache and cramping...its only been 8 days ....when should I take a test