It's my first time on depo-provera injection which I got on 3rd August 2017 which was the 7th day of my cycle. I've had no bleeding. But now I've lost 10kg rather than gained weight which I was told would happen, I'm craving oranges and enjoy the smell of fish now which I hated before, my lower abdomen is firm, and I'm drinking a lot more but I'm constipated but urinating alot. I haven't taken a pregnancy test yet, but could I be pregnant even though I'm on the contraceptive injection?