I noticed semen discharge when I visit the toilet in morning

Are you saying that you have been noticing semen in your urine lately?  If so, this is often a sign of retrograde ejaculation; this means that the sphincter that controls the entranceway to the bladder is defective. Instead of closing when the penis is ejaculating, it remains open (or partially open), causing semen to be diverted away from the urethra and into the bladder. Retrograde ejaculation is basically harmless, but it can cause fertility problems. You might want to check with a doctor if this is ongoing and see if s/he thinks you should start some treatment.  On a separate note, keep an eye on your overall penis health and regularly use a first rate penis health cream (health professionals recommend Man1 Man Oil). One with L-arginine is best, as that ingredient helps produce nitric oxide which in turn keeps with penis blood flow.  Good luck!