Hi! If after the urination, you observe drops of semen, and you worry, do not; it is something that often happens in males. Typically, it happens because the residual semen might come out later. It is no biggie unless you are experiencing other symptoms such as pain or that burning sensation. 

It's generally considered safe and does not have any adverse effects on physical or mental health. It does not inherently interfere with sexual function or satisfaction, infact it can help individuals become more aware of their own bodies and preferences, which may contribute to improved sexual experiences with a partner.

You are declining from what is known as post-void dribbling. It's a situation when a few drops of urine come out after you go to the bathroom. This can be the case for both males and females. Most of the time it is not dangerous, and it can come from different things like the bladder not emptying fully or the muscles being weak. Drinking plenty of water is sometimes the solution. If you're not having any other symptoms, it's probably nothing to freak out about.

Such symptoms must be examined by a urologist to exclude other potential causes such as infections or skin diseases. 

The urinary tract is the part of the body where the bacteria have entered and UTIs are the result. The main symptoms may include frequent urination, pain or a burning sensation while urinating, and urine that appears cloudier or even blood-colored. You need to take sufficient water regularly and the prescribed antibiotics till the end as instructed by the doctor. If the symptoms stay on then a different antibiotic might be necessary for your treatment or a further examination can be performed.