Pregnant or not?

On September 15th, 2017 I got my depo shot. I'm not due for another until December 15th. My husband doesn't use any form of birth control the depo is our only protection. In my family, it has always worked for the women. I have a four month old daughter, and just got over my period two weeks ago. My daughter has been formula fed since she was about 7 weeks old. However, recently I have been nauseous a lot, craving super weird things, cramped for a couple days, my boobs are sore and for the first time in months they started leaking milk. I have been super emotional, sensitive, bitchy, and moody. I am fucking exhausted. I never complain since my daughter sleeps through the night. So with all of that going on, I took a pregnancy test. It was negative, picture included to make sure. I took the picture yesterday as well as the test.