Pregancy anxiety?! need reassurance!!!!

So has anyone ever had such bad anxiety that you may be pregnant even if theres very very high chances youre not? Like me and my boyfriend had protected sex Tuesday but when we finished round one we were horsing around and joking after he removed the condom, left and returned with a new one and he got a little like a small amount of cum up my crack and on my butt, yet none near my vagina and then a minute or two later we carried on with round two. I usually dont pay attention to discharge but i am cause im paranoid. Its a week before Aunt Flow comes and ive got some white kinda creamy discharge but it doesnt go on my panties much. Thats normal right? Im probably just paranoid but im okay right, its just me being paranoid since im so young????