I Fingered Myself 2 Times This Past Month And Its

I fingered myself 2 times this past month and its been the first time ive ever done it, however my fingered did not go all the way in, about my to my nuckles, i am a virgin and there has been no boys present when ive done it... My minds playing tricks on me saying im pregnant and some how semen got on my finger before i fingered myself.. What if before i fingered myself, i wiped my hands on the towel my whole family use ( including my brother and day) and they cumed on it and i wiled my hands before i fingered myself, any way i could be pregnant?