Hi, welcome to HCM. Thanks for asking your query at this forum.
We understand your concern. I have read your question carefully and understood it. I will try my best to answer it.
It appears that you have lot of
anxiety related to quality of semen. You also have low self esteem, self criticism over minor issues, reaching to a conclusion without much evidence, attributing neutral/un-important things and events as significant and negative view of future. These points towards possibility of a psychiatric illness like
depression and/or anxiety. Apart from this you are obsessed with doubts and cleaning (doubting on quality of semen and spending hours in bathroom just waiting to liquefy the semen).
Since you don't want to masturbate, after doing so you apparently feel guilt. This guilt generates negative emotions like anxiety, frustration and a sense of helplessness. Increased bowel movement after ejaculation, painful orgasm and
frequent urination may be because of anxiety associated with it.
Hanging one testis lower than the other is a natural and common phenomenon and it is found in almost all men. You should not un-necessarily relate it with old
injury. Semen is usually sticky and thick in consistency and it is natural to stick to floor for some time before it liquefies. You may clean it with some brush or wiper easily if you wish.
So, I assure you that there is nothing seriously wrong. You should be relaxed and take these things easy. Certainly you are going to have a normal sexual life and you may produce children.
I hope it clears your myth. I wish you all the best.