From history it seems that you are having absolute constipation
giving rise to lower left abdominal pain
, having gas and rumbling sensation.
Insert glycerine suppository, this will clear your constipation and there will easy evacuation of hard stool will give relief from pain and having lump type of feeling.
Take plenty of water.
Take more fiber containing diet.
If problem persisted then go for ultra sound
to rule out any gynaec cause.
ok nd take care.