I was suppose to get my depo shot the beginning of the month but I missed it. The past week or so I've had sore nipples, fatigue, gassy, bloated every time I eat, and swollen ankles. Also when I eat I either eat a lot or I'll think I want something then when I start eating I lose my appetite. I took a pregnancy test but it was negative. My friend says she had a lot of the same symptoms at the beginning of her pregnancy. I'm not sure what it is. Does anyone know?