It started with warmness in my left ear then a feeling of pressure like my ear needed to pop and also sometimes when I swallow I get a reel quick whooshing sound like when you do a real big yawn. this happens a lot when I wake up then slows down a lot after im up for 10 minutes or so. Went to dr. said he saw fluid in the ear. treated me for middle ear infection. after treatment still had these sensations so I went to an ent. they seen no fluid or pressure detected. also gave me hearing test which was perfect. gave me two different nasal sprays for ongoing nasal congestion. Could this be anything serious or life threatening?