Myitzu -- i have never heard of himalaya pilex so cant give you any good info there.
As for healing and then experiencing blood after a hard stool -- that has happened to me many times. It can be very discouraging...not to mention painful. I decided to take a stool softener long term (Miralax) to help ensure my stool remains soft so that I can prevent injuring myself. Over time (year or two) I will wean myself off...but quite frankly if i need to take it for the rest of my life i will without hesitation (though it will be a pain in the butt...pun intended). Make sure you drink enough each day, get enough soluble fibre and keep the bm soft....do that for a good 6 months to a year to ensure proper healing (that is my own personal advice...not dr advice)
All best - Canadabum