Am I Pregnant?

Me and my partner were active for 2 days before I ovulated and for the past few weeks my breast have been sore, back aches, random nausea, loss of appetite( but I eat because I know I need to.) mild cramping, and slight lower abdominal pain on the left side. My menstrual cycle isn't due till the 29th and I've already taken two pregnancy test but they came out negative. I have never had all of these symptoms before my cycle. Only the sore breast (which only occurs a couple of days before my cycle comes but they have been sore every day. Also I've had weird sweet cravings and I don't even like sweets and my partner had sweet cravings the same time I did. Could this mean that I am pregnant? Please help.