Hi, Every So Often When Having A Bowl Movement I

Hi, every so often when having a bowl movement I will push harder and after a bit of prolonged if I don't stop I will get a quick sharp pain right above the xiphoid process which slowly subsides after 5 mins at most. This is usually followed by a small burst of hiccups or at least many belches where a lot of air is released at which point I instantly feel better if I did not already.

This literally, just happened before I started typing and in the time it took me to look up the xiphoid process and get to this page the pain has disappeared.

Please give me any info you can to help me understand what is happening. To me it feels like I am somehow pushing air the wrong way and it causes a sharp pain..