Hello,
I understand your concern.
This may be simply a muscular spasm, the complaints are since morning.
Next Steps
You may take the following homoeopathic medications,
Rx
1. Bellis per 30 (2 pills thrice daily for 3 days)
2. Rhus Tox 200 (1 powder dose stat)
These medicines will help in reducing pain and release your spasm.
Health Tips
Avoid lifting heavy objects.
Avoid bending.
Apply hot water formentation.
Bed rest.
Stay healthy.