I use a heating pad.. a tens unit..and most of all my meds. Make sure you are taking meds in a timely manner so that meds are in your system round the clock.
I am sorry that you are having these severe pain issues..we have all been there..take a deep breath, and try to relax. The more tense you are, the more stress u feel, and the more the intense the pain feels. There is no simple answer. Contact with your PM is the best action that can be taken at these moments.

Dew