hi, i am new to this site.. but i have 2 children already and i still cant tell when i am pregnant.. ok but here s my question.. i have recently got off of the depo shot so i didnt have any menstral cycles, and all of these symptoms started. i have abdominal cramping like menstral cramps, my breasts are sore, i am always tired, i get constent headaches, i have been spotting,and i am always nausiated. i took a test about 3 weeks ago and it said negative…if i took another one would it make any difference between positive or negative? if you could give me some ideas that would be great.. thanks