Factors that break wudhu

Q: When I pee, after I rub or press my penis on to the toilet seat there is a light and/or heavy (sometimes) string of fluid I believe, does this break wudhu? Plus how to prevent it? What is it?

Q: A mufti recently said wadi breaks whudu which breaks Salaah. I didn't know this before and I performed Salaah in this state. So due to the fact I did not know, I won't have to redo the Salaah? Plus I forgot which Salaah it was.

Q: Does the wudhu of a diabetic break if he/she swabs the injection site (e.g abdomen, side of upper arm, front of thigh) with an alcohol pad and await awhile for it to dry prior to injecting himself/herself with insulin?

Q: Does wadi break wudhu?

Q: Does touching one's private part break one's whudhu even if it maybe a necessity?

Q: Do girls have to perform wudhu or shower after vaginal discharge? This white colored emission has been happening before puberty. My Umm says she's not sure in this case but it is better to perform wudhu. I do know that we have to do ghusal after periods but the white discharge emits at irregular times regularly--sometimes even when in the middle of the salaah.

Q: If I have a wet dream but on waking up I don't see or feel any wetness at my private area and also on my clothes, because I am doubtful in nature so I insert a cloth at my vagina then little wetness put on that cloth but wetness was not mani and also I thought that this is just the moisture of vagina as woman private area have always wetness?

Q: Does touching one's private part nullify one's wudhu according to the Hanafi Mazhab?

Q: Passing wind breaks the wudhu, but if I pass wind in the middle of making wudhu do I have to start wudhu from the beginning or should I just go on and finish it?

Q: If a woman is newly married, she feels nervous and feels excitement in the stomach then feels wetness. What should she do?