Reducing night fall. On work due to it.

I need a solid solution to reduce night fall. Please don't say that nightfall is normal! I am 25 year old Male, software Eng. , having night fall atleast thrice a week. Every time night fall occurs I feel heavy pain all through my body , head and pain in the bone marrow of my back bone and I feel week and less energetic and get cold. If I have night fall   then I will have pain in my whole body for continuous 2 days. My case is different from other men.I have this problem for 5 years and I am searching a solid solution for it till I found no working solution to reduce the occurrence of night fall. I have discussed with several doctors so far whom all say night fall is normal but it is actually not normal for me as when night fall occurs the whole semen content stored in my body gets ejaculated and I am not able to do anything about it. Is there any medicine exists to reduce occurrence of night fall . I have sucidial thoughts even as I am not able focus on work due to it.