QUESTION! And opinion ! PLEASE HELP

TXbornNraised❤️
At 9dpo I took a digi test BFN was told by many it was too early .... AF due the 31st
Normally by now I have some PMS symptoms ... Boobs hurting stuff like that .. But today I've noticed some weird things ... Like my teeth are killing me !!! And im all about dental hygiene so I Know there is nothing wrong w my teeth .... Has anyone ever experienced anything like this ? 
I just feel out this month w my BFN and too scared to test w another test 😩 HELP!