Help?

14 dpo, 3 tiny tiny pinkish spots on underwear but a clear watery type of cm..this app says my period is sopposed to come today,but another app says I'm 3 days late.ive been having hot flashes, especially last night,I've had mild cramping but other times it's only on 1 side.my back has been sore but what made me really curious is normally my breasts will be sore and then stop right before my period comes...and they are still really sore.we have been ttc for over a year and I'm so tired of seeing negative results.but I also have A negative blood,so it's hard for me to conceive to begin with.