From side of hip down to calf pain mostly when lay down. have to lay on back . heatpad somewhat helps massageing the hip muscle and calf helps?

You need more than: You need more than that to relieve your pain. See your PCP and get a referral to see a Neuromusculoskeletal Medicine Specialist who is an osteopath (NMM/OMT) in your network. He or she can assess you to see what is underlying your sciatic nerve or other muscle strains and then decompress you to relieve your pain quickly. S/he will do imaging if warranted or make a referral. Time to get relief!