you have got weakness and might have some vitamin deficiency
Usually semen does not coming out with toilet.whitish discharge coming with toiled is due to phosphate salt present in urine.
Some times due to poor hygiene of the part smegma
collects under fore skin of glans
coming out as whitish leaking during urination or by the time jerking movements.
Take multi vitamin supplements,nourishing diet and fresh fruits.
ok and bye.