A sign? Help

Crystal

My first post so I want to make sure it is clear... We have been trying to conceive for about a year. We have used preseed during ovulation time about four times. This month my breasts have been sore for an extended amount if time, today is going on a week and a half...I don’t want to jump to conclusions on what it could be but the pain is getting annoying-I can’t even shower without running into the girls and hurting lol. Took a pregnancy test and of course bfn. Should I have tested later? Or is this just a sign my AF is coming?