I Masterbated Myself And Made My Tip Of The Penis

I masterbated myself and made my tip of the penis clean with the tissue papers.And then,I masterbated my girlfriend's clitoris with the tip of my finger that previously held the tissue papers.I sometimes introduce my finger to the opening of her vagina.As she is virgin,my finger does not go inside.I only touch the hymen.Is there is rick for pregnancy while she is ovulating