Well depends did are you late ? Did you have unprotected sex
Maybe your under a lot of stress your period might be late. Give yourself another week or so than start to worry. And than do a in home test to see if you are pregnant.
If you had unprotected sex, then yes. Being late doesn't nessisarily mean you are pregnant. It could be a lot of different things. A test will say negitive until you are a few weeks late. If a week or so later you still haven't gotten it, then get a ept.
Not necessarily you should wait and see what happens during the next week or so.