Confused

Herberta
I Have 2 Periods This Month , My First One Started In Feb. And Ended On March 3 , Had Sex Early Morning Sex On March 4 And He Cummed In Me. I'm Not On Any Birth Control And I Got Really Nervous . My Period Was suppose To Come On on The 26 Of March But It Was late And I Was Having Weird Body Symptoms So I Took A test . It Came Out Negative. My Period Was still 3 Days Late And I heard It Was To Early To Tell. Now My Period Is On But I Still Have These Weird Body symptoms . I Was wondering is It Possible To Have At Least On Period At The Beginning Of Pregnacy Because It Could Be Too Early To Tell ? HELPPP !!!!!