Janaabat

Salaah becoming qadha due to not making fardh ghusl after becoming baaligh

Q: If a male becomes baaligh by having wet dream and ghusl becomes fardh on him, but he doesn't know that in Shariat you have to perform ghusl after having a wet dream. So he keeps praying with just making wudhu and after 3-4 months of his puberty, he comes to know that ghusl becomes fardh by wet dream. So are all his prayers in these 3-4 months counted or does he have to make qadha?

While offering these prayers again will he make intention of praying qadha prayer or will he make intention of repeating the prayer (I'adah)?

Can a girl become baaligh at the age of 8?

Q:

1. Was I baligh at the age of 8? Since I was 8, everytime I got in the shower I would throw water pressure “down there” until my body shook and was satisfied (I believe this was an orgasm, and I may have emitted maniy but I really don't recall). I read that mani is supposed to be thin and yellow, but I have only ever secreted white or clear discharge, so it was most likely mazi. After that, I would take my full shower without the intention of ghusl. I only started praying and fasting regularly at the age of 11, when I got my first period. Now, 18, I just learned that a woman is deemed to have reached puberty when one of four things happens:

1 – When she reaches the age of fifteen.

2 – When her pubic hair grows.

3 – When she emits mani (fluid released at climax).

4 – When she starts to menstruate.

Second Question: Does this mean I was baligh at the age of 8? Do I have to make up for 3 years of prayers and fasts that I did not do before the age of 11?  I continued this habit in my teen years, after my period at the age of 11 when I was surely baligh.

Third Question: My parents never had "the talk" with me and I did not know until recently what masturbation is, the fact that it is haraam, and that ghusl was mandatory after that. So I would perform the habit then take my full shower without the intention of ghusl. Does this mean I have been praying in the state of janaabat and have to make up for 7 years of prayers and fasts? 

Is it necessary to make intention for ghusal of janaabat?

Q: Is there any niyyat specially for ghusl. I hear people say things like:

Niyyah for Ghusl Bath after having sexual intercourse. "Nawaithu an’ahthasila huslan minal’janaabathi wathahaarathan lil’badni waa’sthibaahathan lis’salaathi ashhadu’anlaahilaaha il’lal’lahu wa’ashadu an’na’muhammadar’rasoolul’lahi.

If I just say that I am taking ghusl to clean myself from janabat, is this okay or doI have to recite the above?

Nikaah performed in the state of janaabat

Q: If a woman or man bathed before their nikah and didn't know they had to rub their scalp but every strand of hair (atleast they thought) was wet would this mean the nikah would be invalid as ghusl was not done completely? What about a woman who bathed after her periods before her nikah and missed some parts of ghusl but thought she was cleans. Is nikah invalid?

What if she did ghusl like this for 4 or 5 months after nikah and did ghusl like this after periods and sex? Does nikah invalidate? What if any part of the ghusl was done incorrectly or missed what is the effect of nikah? Is it invalidated?

Preparing food and eating in the the state of janaabat

Q: I had ejaculation last night and don't have ghusal. I have 3 questions:

1. If I wear clean clothes, do they become impure (naapak) if my body has sweat and my clothes become wet as my body is impure (naapak).

2. If I drink or eat something without ghusl will it be haram?

3. If I prepare food and wash my clothes with water in this condition will both of these things become impure if I dont have ghusal?