Ive had unprotected sex with my boyfriend but he's never ejeculated in me, i had the morning after pill but was convinced i was already pregnant and got told i would come on my period between 3-14 days later, we had sex and later that day i came on my period. but about a week ago he pulled out just in time. i've got cramps and back ache which go away with pain killers, but i suffer from bad backs anyway. ive been feeling sick but ive also got the flu which may be why. i found two little spots of brown blood in my pants earlier but i dont know if they were there from a past period without me noticing. im really worried i could be pregnant.. what are the chances? a.s.a.p please!