I'm 16 years old and I was recently at the park with my first girlfriend and we kissed. It was my first kiss and I was pretty nervous. When I got home I went to the bathroom only to find that I had ejaculated. I hadn't noticed at the park and I didn't have an erection. I've been looking online and I can't figure out if I suffer from premature ejaculation or any other thing. I have mastrubated before and I have never ejaculated prematurely so I have no idea whats going on. I also looked up that it could be a prostate problem but is that really possible? Please reply thanks.