Sex for long pe­riods may be harmful without medical help. Be­ careful taking medicines to improve­ sex performance. The­se can cause harmful effe­cts like rapid heartbeats, dizzine­ss, or even vision problems. Seek professional guidance­ if needed.

It looks like you might have a condition known as paraphimosis. I know that’s a fancy term but all it means is that the skin covering your penis got stuck and now your penis is swollen. Pulling the skin back too much can cause this. The water blister might mean there’s an infection. You need to go to a hospital. They can take care of things and make you feel better.

While it is normal for one testicle to be a bit larger than the other, a sudden change whereby the right one is always bigger than the left one for a couple of days is worth taking notice of. Mention it even if there is no pain and it is okay. The causes of this condition may be something like an infection or fluid build-up. 

Your son's coronal hypospadias nee­ds attention. The urethra's ope­ning isn't where it should be. Urinating can be­ tricky. Surgery repositions the ope­ning correctly. A urologist will check your son. They offe­r treatment options. The surge­ry helps the penis work be­tter. It's an important step to take. 

In that case you need to consult a sexual health specialist. Convey your concerns to them for proper evaluation and remember that sexual health concerns are common and can often be addressed with the right guidance and support