leaking condoms? pregnant?

hi i just want to know if it’s obvious when a condom leaks? i have really bad anxiety and i know the condom didn’t have holes because i squeezed it after to see . i’m just worried it leaked although he said it didn’t because he pulled out as soon as he came . i took plan b like 30 mins later just incase something did happen . i had just gotten off my period day 6 of my cycle now my period is 4 days late ? someone give me advice!