Have a question about male ejaculation?

Hello, I'm 15 and I tried to ejaculate for the first time last night. About 10 minutes in, I noticed clear, drippy liquid, which I believe to be precu-m, come out of the urethra. Around 2 minutes after I noticed that, I felt my stomach roll over itself and felt like I was the king of the world for a split second, and I look down and notice foamy, sticky, clear liquid. I assume it to be sperm, but just re-assuring myself.