I agree with GrandmaKiss. I would check with your doctor. I'm on the depo shot as well, but not for contraception as DH is fixed. LOL! Its for gyne issues, and my cycles have been ALL OVER THE PLACE since starting IP. I haven't had a period in over a year, and since IP I've had 4 periods in 2 months and tons of spotting. Hormones are mobilized when fat cells are burned, so cycles can be crazy and you could be fertile when you think you're not. Get it checked to be sure.
I've finally realized that I AM WORTH IT!