Dear, Bhatta, you are nothing having abnormal, precum is normal and is good no need to take any medicine for this . it"s healthy sing other parameters your penile size , ejaculation time, and night falls are totally normal, don't worry as you get married you gradually learn how to delay ejaculation because ejaculation is not clock bound phenomena it should last till both of you get satisfied. have a premarital counselling
session with sex counsellor he will guide you how to satisfy to your partner. good luck you are a normal male.