What Causes Delayed Periods With Sever Abdominal Pain?

i had protected sex this saturday, my period was supposed to happen sunday. i havent gotten my period and i have severe abdominal pains that feel like cramps but much sharper. ive had back pains like i usually do during my period. if there was a possibility the condom broke while having sex and becasue of that i have missed by period, why am i having such sever pains? these pains occur at least twice an hour and i hvae to change positions so i can withstand the pains. i have missed my periods or have had late periods after almost every time ive had sex but never been pregnant nor had these severe pains. i feel like i may be bruised inside or i am developing cysts or something. my family has a history of developing ovarian cysts and my mother has told me she has an abnormally large uterus. do i have a disease? am i pregnant? will i get my period?