Thank you for your question,
I’m Dr. Saha and I’ll try to help you.
The hard lump can be loaded colon.
Colon can be loaded with hard stool & can be felt in lower left side of abdomen.
You may need an enema
to relieve it.
I would suggest to take an examination by doctor.
Other issues like an obstruction, growth needs to be ruled out.
Dulcolax suppository can be tried, meanwhile.
I hope this information helps.
If there’s anything else I can do, please let me know.
If you are satisfied, please rate my answer as good or excellent.