Hi, is it safe to hold my nose, mouth closed and blow, to pop my ears? When I do this the right ear pops but the left ear feels like more pressure accumulates instead of popping. I have been waking up dizzy, as if gravity is weighing me down when I walk and if I turn my head side to side I feel dizzy. Can holding my nose and blowing with my mouth closed be causing me the dizziness? Thank you.