Opioids are derivatives of morphine, a narcotic pain reliever. The term opioid generally refers to morphine and other opium poppy-based medications. Opioids work by decreasing pain signals being transmitted through the nervous system, which suppresses our perception of pain.
When you swallow semen, Semen and sperm go down into your stomach, where they are digested with all your other food. There is no passage connecting your stomach to your ovaries. You can not get pregnant from swallowing sperm. If the donor has no STDs, it is perfectly safe.
there are probably many reasons why your girlfriend chooses not to swallow your semen some people worry about possibly not liking the taste and or texture you could ejaculate and both of you could do a taste test others worry about gagging and vomiting or getting sexually transmitted diseases stdsask her about these thoughts with an i want to learn attitude similarly you may think about gently expressing to her not just what you want but what it means to youral sex either on the receiving or giving end and regardless of the type strength or length of the relationship is perfectly pleasurable for some an acquired taste for others and for a certain group a no way no how not ever proposition this has to do with their comfort and choices and is not about you