Hi, I went off the depo shot in September after being on it for a year and a half,having to many issues with it, I had a period on October 30 ,wich was light but very painful cramps,its December 3rd and no period but I have cramping and feel like in going to start my period but still nothing?? And I'm not trying to have anymore kids,so would it be possible to be pregnant after being on the shot that long