14dpo...erg

glow is telling me that my period is due today and I know my periods are very regular, and dont come until the sixth.. I have a 30 day cycle and a seven day period.. ovulated 19/20 since I got a solid smile on the 18th.. bd on the 18th and that was really it.. Ive been nauseous and back aches. fatigued and sore breasts. But ive tested today 12 dpo and 10 dpo and no positives. 12 dpo I had some pinkish/brown cm when I checked but that was it and in the morning time. never bled or anything. has anyone else experienced this cos im feeling a bit crazy and am I out then??