I Have Only Had 3 Depo Shots And My 3rd One I Was A Month Late For It . Does It Stop Working If You Were Late For It ? I Had My Period On The 29th And It Ended On The 2nd . I Had Unprotected Sex With My Boyfriend On The 2nd . 10 Days Later I Started Having Very Light Red / pinkish spotting . Its Lasted Almost 8 Days Now . My Lower Abdomen Feels Full/tight and I Keep Getting This Strange Fluttering Feeling In It . I Have Dull Lower Back Pain And My Breasts Are Sore. I Have had Nausea But Have Only Thrown Up Twice . I Have Taken 2 Tests But Both Came Out Negative . I Have Never Felt Like This Before . Could Someone Pleasee Help Me ?