Everyone is different. Some have the porn star, reach across the room pressure, some just dribble out.
The amount and force of your ejaculate is individual. If you personally have noticed a change in yourself thats different. Although lower semen and force is normal with age, a sudden decrease isn't normal. If you're having other symptoms like say, any change in urination or any pain you should g
o see a doctor.
Careful taking OTC sex pills, all that crap is just that. Crap. The sex enhancers are just for show, some make you produce more semen but unless you have something for expelling a ton of man custard I wouldn't deal with them. Zero actual health benefits. Even a slightly enlarged prostate can cause a whirlwind of issues.
I know the exam is frightful for some, but believe me when I tell you it's better than letting a problem go on untreated. Keep your health in the forefront so you have plenty of days to show us EXACTLY how much you produce