Hello. Did you ever get a diagnosis for this?
The penis is one of the external structures of the male reproductive system. The penis has three parts: the root, which attaches to the wall of the abdomen; the body, or shaft; and the glans penis, which is the cone-shaped end (head). The opening of the urethra, the tube that transports semen and urine, is at the tip of the glans penis.
Your penis must store blood to keep an erection. If the veins in the penis cannot prevent blood from leaving the penis during an erection, you'll lose your erection. This is called venous leak. Venous leakage may occur with vascular disease. Venous leakage is also associated with diabetes, Peyronie's disease (buildup of scar tissue in the penis that leads to curved, painful erections), certain nerve conditions, and even severe anxiety.
If this is because of lack of proper blood circulation, you may visit websit of mantoboss.com. It will give you insight into your problem and may give you some useful exercise. Wish you best of luck.