Is my worry irrelevant or normal?

I have serious fear of getting my wife pregnant for that reason we don't actually do intercourse because every contraceptive has failure rates. Thats not the actual thing the actual thing is I engaged in foreplay/fingering with my wife in her cycles 8th day. Only foreplay there was done there was no penile penetration or not even I ejaculated. But after that I googled and saw that fingering with precum causes pregnancy even about splash pregnancy. Now her period is almost 20days away but I can't sleep, eat nor I cam focus in anything due to fear of that If I had precum in my finger. I am sure there was no semen cause I never ejaqulated. But niw all day long I am thingking about it. My wife is also upset about my anxiety. Is my worry actually irrelevant or its normal?