Question ??

Hey ladies 🫶🏻 so I’m 4 days late for my period I took a test on my first missed day and it was negative I still haven’t started and I’m having no signs of starting besides my boobs are super tender like my shirt touching them hurts and I’ve been nauseous but no cramps or anything… when should I test again ? How many days late till you got your positive? Or should I just make an appointment?? My cycle is very very regular so I’m not sure what’s going on ..