Double pillows and the sprained neck

SO and i were changing bedsheets on Sunday when i noticed how dirty, spotty and flat both my pillows are.

So i went to the drawers and took out the new pillow which we had bought some months back.

However, I could't bear to throw away the old pillow. So SO suggested that i fitted 2 pillows into one pillow case.

Monday night, I slept very well......However, on Tuesday, which is today, I woke up with an aching and stiff neck.

Sigh....double pillows are too high. So back to sleeping on a single pillow.