is it too early to be panicking ?

so i had unprotected sex at the end of my cycle last month and it comes regular every month , i get all of my symptoms regularly as well . now i tend to feel like i'm on my period 2 days before it comes and this period is scheduled for monday and i haven't felt anything . i normally get a cramp or two maybe some headaches or even a migraine , but nothing has happened .

am i overreacting ? give me some advice other than use condoms please 🤦🏾‍♀️ i don't want to tell my mom