For women, orgasm is not about reproduction but a way to seek the ultimate pleasure in psychological and physical.
Bearing down is important because it will help the fluid actually release from the urethra.
Similarly, like ejaculation, the fluid emitted by a woman does not contain urine.
It sounds cliche, but try to relax and enjoy yourself, regardless of what happens! There are far too many people out there who want to make their partners squirt simply because of their own egos.
Recently, a small in the Journal of Sexual Medicine concluded that the liquid is mostly just urine.
How To: Learning how to squirt is tricky.