So I think I might be pregnant

Adrine • Iam 26 have a beautiful daughter and a great husband and trying for baby number 2!!
So I think I might be pregnant here's why I had my last period on March 1st had sex all weeken but one day and a few on the green days but yet I have no cramps nothing no sign that my period is coming and than I get on babycenter to find the due date if Iam pregnant it says that am about 4 in a half weeks along but I haven't tested yet should I test even know my period is due tomorrow Someone wanna help me with this an here's a picture so u see what am talking about