Recitation and Listening to the Quraan

Receiving the rewards of reciting Quraan if one cannot recite with tajweed

Q: Without knowing the recitation of Quran with tajweed, many people recite surahs that are mentioned in the hadeeth with great rewards (fazeelat) for example, surah Mulk, surah Kahf, surah Waqiah etc.Will they get the rewards as mentioned in the hadeeth or will they get sin? Secondly, should they recite these surahs mentioned in the hadeeth on regular basis.

Not wishing to listen to the Quraan before an exam

Q: Is it sinful to not want to listen to the Quran right before an exam because you fear that listening to it might cause you to forget some of the stuff you are trying to memorize for the exam? Would it take one outside of Islam to think that the Quran could cause any sort of harm? Obviously, harm can only occur with the permission of Allah, but I mean thinking that the reason for the harm could be the Quran?

Body shaking while reciting Quraan

Q: After reciting any Quranic verses my body is reacting very awkwardly. It has never happened before. My head and upper body starts shaking and moving in a circular direction. The more I try to focus on the verses, the more badly my body shakes. I tried it once when I was outside the house, and at that time I almost felt breathless like air could not pass through my windpipe. I have been having weird kind off nightmares as well. I am really intrigued by why all this is happening to me. I really don't know what I am going through. When I don't recite any verses, I feel a bit okay but when I do, my head keeps shaking in a circular way.