This is not normal. You need to talk to doctor, a urologist . This issue can be handled well by a medicose to get a cure.Do not get discouraged and take a proper treatment. Wish you best of luck.
You may have retrograde ejaculation where the sperm shoots into the bladder. The only way to have children in this case would be through in-vitro fertilization. This is very expensive but will allow you to have biological children. The fertility clinic will have you have sex or masturbate then provide a urine sample which they can then separate the sperm from and implant it into the female. If you have had successfully ejaculated in the past then this is what leads me to believe you may have retrograde ejaculation. You can look this up. But before you worry, you should make an appointment with a urologist. The slow urine stream is not exactly related to retrograde though so you may just have an infection, especially if this is new. If it is not getting better you should see a professional so they can do tests. You shouldn't have a slow urine stream. Hope you figure this out. Good luck! Don't worry just yet.