Hmm? pregnant? this early?

So on March 6th I had my peak ovulation day and used preseed and here I am throwing up on the morning of March 14th. Not feeling actually sick (flu) but just nauseous. Seems far too soon to have symptoms and for sure too soon to get a positive so I'm not even going to test yet. Has anyone else had symptoms this early on? And/or gotten a positive pregnancy test this early?