3 days late

Okay so my period is 3 days late and I'm starting to worry. I had sex during my fertile window using a condom but he did cum inside (in the condom) and now my period is late
I've been doing my exams so I am under a lot of stress and I think I will talk to him and get a test if is is like a week late but honestly I'm too scared to take one now
What do you girls think my chances of being pregnant are? How do you think I should handle this right now? Please don't give me any hate about not being safe and that because I am legal and we used protection and I don't need any negativity to stress me out more so if you have something negative to say please just don't say anything