Since I switched to a hypoallergenic pillow I've stopped waking up with a blocked nose.

What does Since I switched to a hypoallergenic pillow I've stopped waking up with a blocked nose. mean?

Since I switched to a hypoallergenic pillow I've stopped waking up with a blocked nose.

Since I switched to a hypoallergenic pillow I've stopped waking up with a blocked nose. in other languages