Am I prego? PLEASE HELP?

i had stole this exotic sex book from my boyfriend, it was 3 weeks untill i actually used it, after reading it i got hot and i was masterbating and after i noticed on the book there was something sticky and lube like.. im not sure it was sperm or lube or both, but if i rubbed it in my vagina but it was exposded to air for 3 weeks, Am I prego!? PLEASE TELL ME