Hi there, and welcome. You have come to the right place, though none of us want to be here, but it is definitely a helpful board with a lot of people who have been through surgery.
I haven't had surgery, and possibly your GP has now given you some ideas. I think that bleeding is not unexpected after surgery, if you have stitches there.
A good idea is to look back on the forum, in the very part that you have written your post, and look especially at the posts of the guys who have had surgery, though thewho there are a lot of 'girl's' who have gone through it, and have moved on with their lives now.
You will read about Movicol/Macrogol, which I believe is what Miralax is named in the UK...I am presuming that is where you are, but could of course be London, Canada! Miralax/Movicol/Macrogol info can be found here:
http://en.wikipedia.org/wiki/Movicolhttp://www.netdoctor.co.uk/digestive-health/medicines/movicol.htmlHope this of some help, and wishing you all the best along the road to healing and a fissure-free life!