I have a pre cum on my finger then anoint it on my tummy then i used the cloth to wipe the finger that had pre cum before then after 1min i used the same finger to touch my vagina to check if its wet or not is pregnancy possible or not?

Precum does not have sperms. Ejaculation does. In future suggest wash your hands with soap and water before anointing other parts of body with penile secretions to prevent any possibility of pregnancy

Pregnancy is not possible in above circumstances. Contraception remains otherwise key in avoiding undesired pregnancy and associated anxiety and when intercourse becomes possible.