stomach

Q: It is said in the sunnah that it is better to fall asleep on the right side, and that it is disadvised to sleep on the stomach because in the Hadith, it is said:

عَنْ أَبِي هُرَيْرَةَ، قَالَ : رَأَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَجُلًا مُضْطَجِعًا عَلَى بَطْنِهِ فَقَالَ : إِنَّ هَذِهِ ضِجْعَةٌ لَا يُحِبُّهَا اللَّهُ

Similarly, we hear that it is not advisable to sleep on the left side. Now, if someone starts to lie on the right side. Then, involuntarily during his sleeping, he turns on the left side, or puts himself on the stomatch, will she have the totality of the rewards or not? 

Q: I am a woman with a very heavy menses, that comes with very painful cramps. Because it is very heavy, the blood tends to leak (onto my clothes, bed sheets, etc.). Is it permissible for me to sleep/lay down on my stomach as I have found that this position is the least likely to lead to a leak? I have also found it to help with the pain from the cramps?

Q: Is it permissible for a man to trim his stomach hair?

Q:

1. Can males remove hair around the nipples with scissors.

2. I have hairs on my stomach which spreads right and left immediately after the belly point, what should I do, can I remove them with scissors and a trimmer?