could i be pregnant? please help.

ive asked two healthcare professionals, my role model (human anatomy teacher) two boys, and two girls if there was a possibly of me being pregnant and i got the same answer from all of them: "not likely".

i love my bf...I've made that clear to him the night i gave him oral/hand sex (til he came) and an hour later had phone sex with him . i am still a virgin in my eyes. but there are times when i question if i am pregnant. that all happened the night of may 24-25. with that being said, i was sorta denied emergency contraceptive at the clinic so if i were to be pregnant i would now have to have an abortion. i took a defective test so im not sure if i am pregnant. my first day of my last cycle was may 14th and ended on the 19th.