Could Spotting Be Due To Pregnancy?

Hey I had my periods last month on 24th april after 2months delay and i had taken pills to have these periods, my periods of 24th april just lasted for 2 days with very less bledding. I had unprotected sex with my partner on 30th april and 4th may where in he ejaculated inside. today is 6th may and i see some blood spotting. Are these the symptoms of being pregnant?