Could it be possible that this was implantation bleeding? We just got off birth control October 2nd and I had my first period this month, first 3 days were really heavy, and then after was real light, like spotting. Then 5 days later spotting again! Supposedly before my ovulation period! And it was only about 2 1/2 -3 days of spotting, very light pink or brown. Since then my back has been hurting a lot, extremely fatigued, achey breasts! Ugh! What do you guys think???