I had my period in october i dont know when it started but it ended the 30th i am with my boyfriend and we had unprotected sex multiple times from november 9th till now the past 5 days ive been feeling 'different' im having lite cramps and backaches. im super tired and my period is due tomorrow but i took 2 test and they were neg. i have a 4 yo but i dont remember feeling backaches.. help out if you can tell me some more things please. thanks