After suffering in agony for several days eventually, I went to the doctor. Talking to him he asked what was wrong. A bit embarrassed I said I was constipated and had been like that for several days.
No problem he said and gave me a box of the biggest pills you have ever seen.
His instruction was for me to put three up my back passage, one in the morning, one midday and one in the evening for two weeks and then go back and see him.
So for the next two weeks I did just that, a huge pill up my back passage in the morning midday and evening.
Then I went back to see the doctor who asked if the pills worked.
"No" I said