Pregnant from being fingered if the finger had sperm on it?

now the second guy is different.  on march the 21st i missed my period and i did not think much of it because I am not very regular in the first place. I knew that i was not pregnant cuz i did NOT have sex. Anyways on march 24th me and this other guy messed around. basically him and his gf wanted to have a threesome with me so i agreed. we did NOT have sex but i did give him a bj and i did give him a hand job and he did have a lot of pre cum coming out of his penis. it was spilling all over the place so i made sure not to get it anywhere near my vagina. I think i sat on some pre cum stains on his bed but i sat on them with my butt only so if anything it got on my skin of my butt. well after i gave him a bj he fingered me. I remember he did touch his penis while i was giving him a bj. there was an instance where i stopped sucking him and he touched his penis and started to masterbate himself. then i went back at sucking him (sorry if this is tmi but its necessary) anyways after i gave him a bj he did not come. he made me stop. he then started to finger me and i am NOT sure but i THINK he might have had pre cum on his hands. not very sure though. he fingered me very deeply and also i was rubbing my clit at the same time and i know for a fact i touched his penis and got pre cum on my hands but i had wiped it off pretty well. i did not get a lot of it on my hand. 

ok so lets re wind. last period was on feb 22. i was late in march. 3 days after my missed period i had a threesome and i MIGHT have been fingered with a finger that had pre cum on it but i am NOT sure. I missed my period in april and if i do not get it next week I will have missed it for this month as well. I do not have any pregnancy symptoms but my breasts do seem larger and my nipples do seem darker and i have lower back aches but these things all happen to me the week before i get my period also so idk if i am possibly pregnant or if I am about to start my period next week. Like i said i have NEVER had regular period. there was one time two years ago when i did not have a period for 5 months! i was so worried that i was pregnant that i think my body started to give off the symptoms. but this is the first time since last summer that i have missed a period. 

is it possible to get pregnant if a guy had pre cum on his hands and the fingered me?  i know i had it on my hands but like i said i wiped it off and i only touched my clit. If i do not start my period next week I am going to get a pregnanct test. but I think at this point i would pretty much know if i was or not without a test. I do not have morning sickness at all and i dotn feel tired or anything like that. so i dont think i am pregnant.