I need to know if this case could be a pregnancy case

It is possible to get a false negative although the pregnancy hormones would be showing up in your urine by now. Wait a week and then take another test. Also, teenagers cycles are sometimes not very reliable so it is normal to be late at times.

In the future, if you’re going to use a condom (which is a very good thing) don’t let him take it off and go back inside…that defeats the whole purpose of wearing a condom.

yes, you could be pregnant, as there can be sperm in pre cum (the clear fluid that comes out of his penis before ejaculation) though its not all that likley and the late period could also be caused from stress but to find out if your pregnant take a pregnancy test 2-3 weeks after you had sex (any sooner and the results won’t be accurate) in the morning with your first pee is the best time and take it when your period is due alternatively, see a doctor for a blood test this will both let you find out quicker and give you more accurate results

Thanks gcumbr1, just to add a detail Im not new in sex, I’ve been having sex once a month starting on Sept 5th, then October 2nd, and all the summer I was sexually active (long distance relationship) I am bringing this up since some people have said that If you just started having sex, it happens. Its due to a hormone shift. I dont think its my case though.

Wait another week and test again to be sure. It is doubtful you are pregnant.