My wife awakened about 45 mins ago with severe pain in her back, even with her shoulder blades, and centered on her spine. Pulse, respiration and BP are normal. The pain comes in waves and it feels like a spasm. I gave her three aspirin to chew and swallow, immediately. She is on a heating pad now and appears to be getting some relief. She is 50 yoa, and has a sedentary lifestyle. No history of coronary issues.