How did yall know you were preggers before a positive test ?

okay here it is im 26 years old last date of my period was dec 9 2007 i should have prob been due for aunt flow around the 9 of jan but i still havent got it. i tested for pregnancy on the 9 and the 17th of jan both came back negative results i am ttc me and hubby did the due a lot dec 13 and up so there is a chance im preggers .. i already have a seven year old so i should know the sighns of pregnancy but im not hugging the toilet like when i was preggers with my first pregnancy..im going for test when doc office opens up in the mornin here are so syp's ive been having if you had these and ended up getting a positive test result let me know if i am i am about 6 weeks i think ? thanks and baby dust to all ttc in order misses period,one larger than other both kinda raw feeling on n*pple,bumps around n*ipple on both more on the thats swollen,lil dizzy at times and quezy and slight cramping no blood at all and im used the bathroom a lot not pee but going #2 any input?