Am I crazy or is this possible early pregnancy?

So I had unprotected sex on my ovulation/fertile day, he used the pullout method& to me what seemed to be a not so good pullout either. I’m currently 3 days late on my period according to my cycle tracker(which is correct). I’ve been feeling quite odd lately as well and I’ve noticed I’ve had a very bad craving for avocado/guacamole which that’s something I never usually eat. I actually have never been a fan of avocado/guacamole. I’ve taken about 4 pregnancy tests already and they all say negative.. Also the food cravings is just one of many odd symptoms I’ve been having.. All opinions are welcome and appreciated😇