Am I Pregnant?????

My Period Started On July 10th Of Last Month And I Had Unprotected Sex 7 Days Later When It Ended. So I Took Plan B And Bled 4 Days After I Took It. I Am Just Now Getting My Actual Period. It Started Yesterday August 17th. It Was A Week And 3 Days Late. When I Got My Period It Was Red Blood. Now Today When I Woke Up To Go Check, Its Brown Now. Even When I Wiped. Idk What This Means. It's Way Lighter Than Usual Too. What Could This Mean? I Didn't Take A pregnancy test Becuase I Have No Away Of Getting One. The Only Way I Could Get It Is By Telling My Mom To Have Her Get It For Me And I Am Scared To Do That. Why Is It Brown? It Started Off Red. I Am Freaking Out Inside. Please Help???? I Haven't Been Feeling Any pregnancy Symptoms Either. Could I Still Be Pregnant?