On Wednesday I woke up with my left ear feeling a bit blocked, went to bed thinking it would somehow right itself by morning. However, woke up Thursday and it feels completely blocked. Went to Boots who advised ear drops and a washing thing. Tried all of those and nothing has worked. There appears to be no wax there causing the blockage.
I have tried : Otex drops, a saline ear spray thing, olive oil and a bulb syringe with warm water. I have also tried holding nose and trying to 'unpop' them and a nasal decongestant spray (suggested by Google)
It feels like they need to 'pop' . I also have high pitched ringing in that ear now and I can't hear anything at all in that ear 
Someone on Twitter said it might be the eustachian tube as she has same problem for over a year 
I haven't had a cold or flu and there is no pain or swelling or anything.
Any ear experts?