The Hebrew word makkov — pain, anguish — appears in Job 33:19 and Isaiah 53:3 in ways that describe deep physical suffering. Isaiah 53:3 says the Servant was "a man of sorrows, and acquainted with grief" — but the Hebrew word translated 'grief' is choli, which specifically means sickness, physical illness. The Servant's identification with human suffering included physical sickness, not just emotional grief. Whatever pain you are carrying in your body, it falls within the scope of what the Suffering Servant entered.
Romans 8:26 addresses the condition of a person whose pain has reduced them to wordlessness: "the Spirit itself maketh intercession for us with groanings which cannot be uttered." The Greek stenagmois — 'groanings' — is the sound of a person in physical pain who cannot form words. The Holy Spirit translates those pre-verbal sounds into intercession. On the days when a migraine reduces you to lying in a dark room unable to pray, you are not outside prayer. The Spirit is praying in the groanings.
Commentary is from a charismatic Protestant perspective, drawing on KJV text and public-domain sources including Spurgeon, Andrew Murray, and Matthew Henry.