I Got My First Depo Shot On October 27Th And I've Had Unprotected Sex Three Times Since (November And Twice On December 7Th) Since My first Shot I've Not Had My Period. After My Last Time Having Sex My Boyfriend Ejaculated In Me And To Be Safe I Took The Plan B Pill. The Whole Time I've Been On The Shot I've Not Had My Period And Lately I've Been Cramping A Bit And Had Dark Brown Discharge. Could I Be Pregnant???