welcome to hcm
is this started with a fall or was it sudden.
hv u suffered from this problem in the past.
try out these simple things.
hot water foment the back twice a day.
avoid bending with back rounded.
while getting up turn on one side and get up.
consult a physio.
try out static abs and back exercises
back manipulation and mobilisation can help.
physio modalities like TENS
can be used for pain relief