Hi I am concerned about my period I am on

Patient: Hi. I am concerned about my period. I am on birth control and I was sick with during my fertlie week of April 12th. Lately I have been noticing some specks of blood but it did not turn to my usual period; I was suppose to start my period on May 1st. Should I take a pregnancy test or just wait a few days

Symptoms: A little bleeding

Doctor: