am i pregnant???

Ari • I'm 24, I have one beautiful 3yr girl and another girl on the way
I had unprotected intercourse on the 11th of October, I haven't had a period yet so I thought it was just stress.. then yesterday I was spotting light pink blood, it went to red then today it went back to pink then went away I have been very nauseous huge appetite I took a pregnancy test and it was very faint...