A little worried

Don’t know if I’m jumping the gun or not, but this period is a lot different from the others as it’s late for no reason. I had some spotting last night but that was all . My uterus had been very sore the last 2 weeks. I should also note that my fiancee has been told he was steril and has never had any kids of his own and my tubes have been clipped and burned for 13yrs . I don’t wanna get my hopes up and I’m terrified to take a test . Idk what to do