So heres the thing i had my period on September 4 lasted about 6 days im not suppose to get my period till the October 2 . I ovulated on the 18 apparently tracked by my app and opk . Im currently 11 dpo been having light cramps for the past two days . Breast feel tender & very exhausted for the past couple days, lower back pain & a bit nauseas . Took a pregnancy test at 10 dpo not a sensitive test . but came out negative maybe its too early. Can anyone explain whats going on ? Btw i checked myself & wiped again & nothing came out but a bit of discharge. *doesnt have any smell * having light cramps .