my boyfriend and i were just messing around. while giving him a blowjob he ejaculated in my mouth and i swallowed most of it. then we made and some semen spread into his mouth. then we waited for a minute while he put his pants on and then he kissed my tummy and licked my vagina with his tongue. he didnt put his tongue deep in but just all over it. i was wet that time. this was about 5 days ago. am i pregnant ?? i am really worried. please help. thank you.