Is my girlfriend period late cause she stressing or is she pregnant.help?

My girlfriend is 4 days late on her period, she got no white discharge, no sore breast no vomiting, she stressing about her period being late. We use condom a week before her period ..is she pregnant or is late? She told me im stressing her cause I keep askin when is it coming in?

Usually it takes a few weeks for symptoms to start (talking from experience - I found out I was pregnant when I was 9 weeks along)
It could be stress so maybe take a step back from asking her those questions and wait for her to bring it up.

It could be either, no one knows. My advice is for you to buy a couple pregnancy tests (better safe than sorry) and see if she is or not. Also, don't let her stress because stress can put the cycle off and make it appear later than usual.