Late Period & Negative Pregnancy Test: What To Do?

Question
My last period was May 1st.  My cycle is 31 days, so my period should have started on June 1st.  I am now 5 days late, I took a home pregnancy test yesterday and it was negative.  Should I wait and take another test in a week?  Is my period just late?  I am not feeling any pregnancy type of symptoms, does this mean I am not pregnant?  What were the days in May thay I could have gotten pregnant?   Sorry for all the questions & Thanks in advance for all the answers.

Answer
If your last period started on May 1,   you probably ovulated on May 17 and could have conceived if you had sex on May 16,17,18 or 19. The best time to take a pregnancy test is seven days after you miss your next period. You were due to get your period on June 1. If you don't get  your period by June 8 , take a pregnancy test.