hello the fact that you have had medical help with this problem i would return and get checked up.
I so understand how you feel and the fear of not wanting to move your bowels for pain.
stick to good sources of fruit and fibre vegetables and whole grain and dink 6 glasses of water a day this helps keep stools softer.
My medication morphine constipates me badly and i had to learn to change eating habits.
I still have a pile or hemarroid that bleeds but usually get relief when it does and still use a good anusol cream to help shrink them before they get too bad.
good luck hope this helps you.