Afraid to date because of chances pf cheating and unwanted pregnancy?

i dont have much dating exp. im 20 male. but the last thing i would want when im in a relationship is for this person to cheat, or to get pregnant unexpectedly. i dont want to have a kid( especially at this age), because it will sap my happiness and ruin my life. and i dont want to be lied to and think my partner is faithful to me when she isnt. what do i do to avoid these things because anything that ruins my life or makes me depressed will be met with hostility. yes even my own unexpected child. because its birth would ruin my happiness and well being, yes its harsh, but its the truth.