Discharge/urine smells like semen and sweet

🌼sunshine🌼
Im 18 weeks and a few days this is baby #3. And for maybe the last week and a half iv noticed every time just about that i go to the bathroom i smell this sweet smell and like semen. I never had this with my other 2. What could this be? Iv read that amniotic fluid smells like this but surely im too early to be leaking. Right?