Late period but negative test

Hi all! :)

My hubs and I aren’t currently ttc but wouldn’t be upset if I am pregnant. We use condoms but this cycle he did slip it in for about a min with no protection but put a condom on right after. He did cum inside of the condom and it didn’t appear any made it’s way out. But many times before he puts the condom on he will rub his penis on my vagina. My period is 4 days late and no period in sight. My nipples are definitely more sensitive. I took a pregnancy test yesterday and it was negative. I did have the flu earlier this month and had it for nearly 3 weeks. So I guess that could be messing with my cycle.. but the only other time I was this late was when I was pregnant with my daughter. I’ll be taking another test in the morning but was wondering what everyone thought.. pregnant or just late for whatever reason?