Ghusal

Dirt around the private part

Q: Dirt is formed due to sweat around my private part (black dirt) and gets stuck near the place where the circumcision begins (and this dirt can only be seen if there is an erection). Recently it occurred to me that this might have prevented the water to reach the skin during ghusl. I don't know whether that dirt is porous or not. Was my ghusl valid which I have been doing the same way without noticing it from the day I became baaligh. If ghusl is not valid, are my clothes and the towel and all the other things which I use everyday are they paak?

Dissecting dead bodies

Q: In medical school you have to take anatomy class and dissect cadavers (dead bodies) for educational purposes of course. The cadavers are non-Muslim as far as I know but you wear gloves and lab coat while dissecting.

1) Do you have to do ghusal every time you have that class because you dissected the cadaver or is wudhu sufficient to do wudhu to pray namaz?

2) If you have more classes after that and you just wash your hands do you have to read anything while washing them?

Ghusal after an orgasm or wet dream

Q: If you could please give some guidance on the situation it would help a lot. I have heard that females only need to do ghusal when they have an orgasm or wet dream. I am a very doubtful person and 1) sometimes when I am sitting I will feel some tingling once or twice but I don't feel an orgasm, do I need to perform ghusal? 2) This happens allot and causes me lots of stress. When I go to sleep I will see a dream and feel tingling but don't feel or remember feeling an orgasm, do I have to make ghussl? I get vaginal discharge all the time so its very hard for me to check if there is extra wetness. Please give some advice.

Gargling the mouth and cleaning the nose

Q: When you do ghusl, do you need to make sure you make the gargling noise when rinsing your mouth to make sure you rinsed your mouth correctly and properly? Because it feels embarrassing when you make the noise because other people can hear you outside the bathroom and they would know that I'm doing ghusl and I'm impure? Also, do you have to sniff water up your nose and touch/reach the beginning of the hard bone/part of the nose or is just putting water without sniffing ok because I find it hard and impossible to actually sniff the water into my nose? Also for ghusl, are you allowed to first take shower and rinse your mouth and nose while you're taking a shower? Does this count as ghusl and is it valid?

Doubts

Q:

1) Its 4am and now I am in the state of impurity. I didn't do anything but for boys it happens naturally. So I just woke up from my deep sleep and fajr will be aftr 1 hour and 30 mins and I am confused what to do. Can I just perform ghusl by washing off the impurities and then washing my whole body with the niyyat of ghusl? Do I need to make wudhu too? It will take me 20 minutes to wash my entire body so can I just wash my body and then sleep and then when I wake up for fajr then make wudhu and pray? Is this allowed in islam?

2) Sometimes while doing ghusl a lot of negative doubts arise in my mind and then it takes me around 30 to 40 minutes to finish. Please help me out.

3) Does my wudhu break while chatting to a girl who is my friend and just friend no girl friend. And the chat is decent no bad things.

4) Will sweating break my wudhu?