Pregnant??!!

Ki
Last Thursday my boyfriend and I started making out then the next thing I know he's fingering me. After I orgasm, I suck him. He finished himself off and I wiped everything. Then he decided to finger me again. Should I be worried about pregnancy? 
I highly doubt I am but it still worries me. I'm 16. I know sperm has to come in contact with my eggs. I'm just worried there was sperm on his finger. 
Edit**** It was a day before my fertile window