Risk of pregnancy after masturbating or from pre-cum?

When I am masturbating and getting really horny I think to myself that I will have a taste of my own cum. However when I do jizz and the feeling has passed. I just look down at my jizzy hand and think 'maybe next time' and go to wash it off. Try just before you think youare going to cum stop jacking off and your cock will twitch and cum some put it right into your mouth. Keep it there while you finish jacking off then put the rest in your mouth.