Irritation in penis, more details in question

Patient: Hi,I have been dehydrated the past few days due to a gastric sleeve operation (hard time getting fluids down). I masturbated a few times after coming home from hospital. It feels like there is something stuck in my penis(semen?). I think maybe due to dehydration it’s not all coming out like normal, sometimes my urine is cloudy and sometimes I can squeeze out thick white semen even though it’s been hours after masturbation. The irritation in my urethra is really annoying, do you have any advice?

Symptoms: Constant irritation in urethra

Doctor: