Too early to test?

Katelyn
Hey everybody. So my last period started April 21st and ended on the 24th. I then had unprotected sex on the 25th and the 27th and also during my fertile period of the first of May. The third and the fourth. I took a pregnancy test on May 8th but it was negative. I'm set to start my next period on the 19th of May. Could it have been too early to test?