Is it permissible to remove janaabah by means of tayammum?.

I am currently living in Canada for the purpose of study, but my permanent place of residence is between Jeddah and Amman. When I stayed in Amman during the summer break, I decided to go to Jeddah to deal with some official papers, and I intended to do ‘umrah if Allah made that possible for me and if I had a mahram and enough time to do ‘umrah. I intended to do ‘umrah from Jeddah because my mahram would be there. But because I was not certain that I would be able to do ‘umrah, on the day I travelled by plane I did not do ghusl, because I was menstruating and I had not yet decided to do ‘umrah. When I got there on the second day I did ghusl and formed the intention to do ‘umrah from Jeddah, and I did it.
My questions are:
Is my ihram from the miqaat of Jeddah considered valid or not?  Because of my family circumstances, we are always moving back and forth between Jeddah and Amman, and we always enter ihram from our house in Jeddah, even if we are on our way back from a trip to Amman and after staying in Jeddah for several days. We do not remember how many times we have done ‘umrah in this manner.
What is required of us if we should have entered ihram from the miqaat for the people of ash-Shaam (Greater Syria)? After I did ‘umrah I was uncertain as to whether I was completely clean following my period. If I think it most likely that I was still menstruating whilst I was doing ‘umrah, what is the ruling on my ‘umrah and what expiation do I have to offer?.

I wasnt aware that ramadan fasts missed due to menstruation had to be made up before nafl ones and I started keeping some nafl ones so is it possible for me to change the intention of the previous nafl ones I have kept or to change the intention of fast during the day? Because the one I kept today for example I started off with the intention of keeping a nafl fast but can I now change this to the intention of making up the ones I missed in ramadan?

I bought the ihram garments, and the set came with three pieces, two pieces like towels, one for the upper part of the body and the other for the lower part. As for the third piece, it is to be used as a kind of underwear on the lower part. The three pieces are not stitched, but they have two metal snap fasteners for securing the garments.
Does the fact that it has two metal snap fasteners to secure it make these garments unacceptable according to sharee‘ah? I heard that it is not permissible to wear the third piece that is described above – is that correct?

Is it permissible for me to say to non-Muslims "And the same to you" when they wish me a Happy New Year or say Best Wishes?

I would like to know some of the ahaadith which speak of the virtues of Jumu'ah prayer.

I understand that hijab is required, and I’ve been wearing it for some time now but I feel like putting it on might have been a mistake.  I don’t feel like it’s made me become a better Muslim, and I feel almost like I’m deceiving people because they look at me as an example even though I’m still struggling with a lot of things. Also, if I take it off, is it really something Allah will punish me for? It seems like such a petty thing. Isn’t the most important thing having a clean heart?

Can a muslim pray for his non-mulsim mother who has passed away?

When I went to do ‘umrah, I was menstruating, so I did sa‘i and cut my hair, and I exited ihram and put on niqab. I waited until I became pure, then I did tawaaf at the Ka‘bah. I did this based on the ruling on Hajj, which says that the menstruating woman should do everything except tawaaf. Please note that I am not married. What is your opinion, may Allah bless you?

Will a person (a believer) be rewarded if he listens to the Qur’aan without understanding what he is listening to, but he knows that it is Qur’aan? Or will he not be rewarded unless he understands what he is hearing? I hope you could give some evidence from the Qur’aan and saheeh hadeeth.