Ghusal

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? 

Q: If the husband touches his wife's back private part with his penis, it was not felt inside and there was no discharge released, is ghusal required?

Q: I wanted to ask I had a wet dream, did sex and released mani also but I performed only one ghusl of janaabah. Is my ghusal valid or should I do for each case differently?

Q:

1. A person felt shahwat, but after some time the shahwat went away. After about an hour, when there was no shahwat, he found some mazi coming out of his private area. Will ghusl be waajib upon him?

2. A person had shahwat, and during his shahwat mazi came out of his private area. Will ghusl be waajib on him?

Q: My question is regarding madhiy and maniy. I read on a trusted website, that, if a person feels discharge come out and they forget to check it before doing istinja but can tell from washing that no discharge has come out then ghusl is not required. This is only because I get bad thoughts that come to my mind and I always check to see if maniy has come out, but I see nothing. 

Q: Yesterday I performed ghusal for janabat in the afternoon and urinated two times. One time before ghusal (after discharge) and one time during ghusal and did not see any manni. But after that, the next time I urinated was this morning and some drops of colourless sticky liquid came out after the urine. I also have pain in my kidneys from yesterday. Do I have to perform ghusal again or not? 

Q: I wanted to know what exactly is mani and mazi. I know one is thick and one is thin but what about the excitement thing? Mani means you have to have a ghusal and mazi is just whudhu, but I'm not sure what they actually look like. Is mazi like water (just liquid) or is it a little bit thick and strechy?

Q: What if I do ghusal and then also attend salaah but later I have a doubt whether the ghusal I did was valid or not. The reason being that I think the water didn't wet all the hair on my body. Should I do the ghusal again and repeat the salaah which I attended?

Q:

1. Should the meat stuck between the teeth be removed during ghusal?

2. Should the white layer around the edges of the nail that may be dead skin or something like that be removed during wudhu or ghusal?

Q: If you have a internal scan done, do you have to take ghusl?