Hi, I'm Really Worried I Might Be Pregnant Even Though

Hi,
I'm really worried I might be pregnant even though I'm hearing the chances are really small, maybe I'm just paranoid. My boyfriend and I were messing around two nights ago and I gave him a blow job and he came but not on me and he went to the bathroom afterwards and wiped the cum and washed his hands and he then fingered me and after that he rubbed his penis on my vigiana but did not penetrate and I'm still a virgin. I would just like to know if there's a chances I could be pregnant and what are you clues I should we looking for if I am. Should I be worried ???