hi, i got my first depo shot May 2008, and was due for a new one August 1-15. For various reasons I did not continue with birth control. I do have a concern though. I have been bleeding (some spotting, brown, some heavy and bright red) on and off for about five weeks. My breasts are tender, not so much where I can barely touch them, and I feel like I have gained weight, even though I have been working out regularly. I have also taken pregnancy tests, and they have came out negative. Has anyone else experienced this? Could it be my body just getting back to normal after the shot?