Swallowed sperm, can it be stuck in throat for week and a half? or is it something else? i feel mucus

Something else: You would not feel the sperm you swallowed days later. You may have post nasal drip or be feeling mucus from seasonal allergies and your posterior naso-pharynx. Drink plenty of water and see the Doctor if your symptoms persist. Best wishes.

No: this time of year there are lots of reasons to have mucus on the back of throat. However, since you posed to question the one thing you should be aware of is that unprotected oral sex performed on a male can increase your risk of HPV of the throat and gonorrhea can be transmitted that way. A lot of women perform oral sex instead of vaginal to avoid pregnancy. Its safer to use a condom with oral