I tried to read every post in here and I will try to not be redundant, and congrats on the fiancee..
First things first, don’t mess with the endocrine system through pills, injections or any other foreign substance. The endocrine system is in a perfect balance that when tampered with could have some pretty good side effects.
Ways to naturally raise your Testosterone levels:
1- Lift weights, 30-45 minutes a day, 5 days a week. Once you leave this period, your testosterone declines and cortisol levels increase from stress.
This is step number !ONE! To getting a stronger body and higher natural testosterone levels for a higher seminal fluid ejection. If you notice most of the porn stars people look up to as having a big “load” are in outstanding shape, so do not overlook exercise.
Step two:
One thing, as others have said, sperm have little to do with the volume of your seminal fluid(cum) (<5%). Where most of the fluid(roughly 60%) comes from is your seminal vesicles (located just above your prostate). This fluid contains mostly fructose, and fibrinogen(PROTEIN) . With this in mind, ensure your diet is well maintained with plenty of protein and fruit.
Your prostate gland releases another 30% of your seminal fluid. This is more acidic, so possibly vitamin C here with other minerals.
The remaining percent is released by other accessory glands and is inconsequential when looking at the big picture.
Another note: it takes between 10 and 14 weeks for sperm to go through spermatogenesis. Spermatogenisis is the process of a spermatogonium turning into four sperm. So increasing your sperm count overnight is practically impossible.