Pregnant?

Ok so I just got off birth control around 2 months ago. I was taking it for about 5-6 months. Then I had sex with my boyfriend which lasted ehh 15 min tops because I just couldn't do it without birth control but if took him 30-1 HR just to finish.( in other ways of u get what I'm saying) so I know he pulled out super early but I'm late on my period and I used to always be horribly late. I've been cramping really bad to!!! I took at pregnancy test a few days ago which was 1-2 days after my expected period and it was negative ( by the way I took the test 3-4 weeks after we had "sex") . I know there is a possibility but what is yalls opinion ! ❤️❤️❤️❤️❤️❤️❤️