You can not get pregnant by drinking sperm
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Semen is like a warm and not particularly tasty high-protein shake.
Drinking it won’t make you pregnant, but it could make you a bit nauseated…. so don’t down a cup of sperm every day before breakfast or you might mistake your queasiness for morning sickness.
Explanation for why you can not get pregnant by drinking sperm:
The way to a man’s heart may be through his stomach, but it’s only a metaphorical truth. If you look at the actual anatomy of the body, the heart isn’t actually connected to the stomach…. and neither is the vagina.
When you drink something you either swallow it, in which case it goes through the digestive track and gets digested or someone scares the crap out of you and you spill it all over yourself. (I am ignoring the third possibility where you inhale instead of swallow and get whatever you’re drinking into your lungs.) In either case… you’re pretty safe from pregnancy
It is worth noticing that performing oral sex on a man without using a condom does put you at risk of several STDs – including syphilis, herpes, and gonorrhea. If you’re drinking your semen out of a shot glass… well, you have other problems and I probably can’t help you.