First of all, based on all your posts I've seen, it seems like you disclose things to your mother you might be better of not telling her, seeing as her reactions are quite negative. It's good to share things with your mom, but based on what you've written here, she is not very supportive.

Also, Some women pee when they orgasm, or feel the sensation of needing to pee.This is because of the muscles of your bladder spasm, or a weak pelvic floor, and also a weak neck of the bladder.
The thing is that most women that have weak pelvic muscles or bladders experience leakage in other situations besides orgasm.

It Is most likely what people like to call female ejaculate, or squirting, which contains mostly urine. studies find that for woman who squirt, there is also prostate fluid in it, the ammount varies. Squirting is urinating, but will always contain female prostate fluid. Regular urine doesnt. The ammount of this fluid (psa for short) varies. The prostate fluid filled urine comes from the same place your pee does, the urethra. Peeing before you have sex wont help because the sensation of sex and orgasm causes the bladder to fill with some urine before it ejects during orgasm.

I also feel the need to pee when I orgasm, and im sure it is just as they call it "squirting" My bladder muscles spasm a lot when I have an orgasm. You can feel and see them spasming quite hard lol. It's awesome. But it also makes me feel like I am going to pee/squirt and sometimes I do. Sometimes what comes out is yellowish with slight pee odor, other times its clear with no odor, but always feels the same.. Like peeing, but in a very "gushing" sort of way. Not quite as much comes out as my normal passing of urine, though. :P

Most guys find squirting to be quite sexy.