That's totally up to you. Typically, women can have multiple orgasms. Once you get them there, and you're still "hitting the spot" they can ejaculate within a short period of time. For guys, we...
Maybe because the sexual excitement receded. Pre-ejaculate is produced by the Bulbourethral gland in preparation for the ejaculation of semen (ejaculate).
It's possible that the pre-ejaculate might not be out of the penis yet, but it typically precedes the semen during intercourse or masturbation. It is natural for a male to emit pre-ejaculatory fluid...