Anxiety: Rewrite from my free verse

I couldn’t shake this feeling, so surreal, In a dark tunnel, air begins to steal. With the air, the light fades away, Choking, gasping, clawing, I sway. It’s not a tunnel, it’s water, I sink, Slowly slipping, on the brink. Pulling, struggling, to rise above, A siren sounds, am I losing love? Can’t breathe, can’t move, can’t think, can’t fight, It’s not a siren, just a constant plight. Beep, beep, beep, thump, thump, thump, The beep fades, the thump a gentle bump. A slow glow of light, above my head, Then the realization, I’m not dead.