had sex last Tuesday and he went on my stomach. He wiped it off and then I quickly went to the washroom to pee. Wiped my stomach 2-3 more times with toilet paper. There was no semen left on my stomach that was liquid and my stomach appeared dry, but I wiped a 4th time just in case. B/c there was nothing on the toilet paper and it was dry the fourth time, I accidentally almost used that toilet paper to wipe my vagina from peeing. (Already wiped once w/ a new toilet paper so vagina was dry) It only touched my vagina on the outside slightly before realizing it was one I used to wipe my stomach with. Quickly dropped it after. Been worried all week wondering if sperm did go in vagina and if I should take plan b, so I took it 3 days after sex (Friday) even tho it's more than 72 hrs bc I was very hesitant. It's been 5 days and I've been waiting for my period bc it's supposed to happen around this time. Was taking plan b the best decision to make or was I worrying too much?