Thanks for your query.
Pains that you have described are likely to be due to a muscular pain
most likely caused by a wrong body posture. Taking mild stretching exercise will be helpful. Pain killers and muscle relaxants will bring a short term relief.
You can do a hot fomentation and apply a local analgesic
gel on the area to relieve the spasm.
I do hope that you have found something helpful and I will be glad to answer any further query.