Clogged Ear After Using Earplugs

The past 2 days have been very loud days for me , so I had to wear ear plugs almost for half the day on Wednesday and yesterday Friday I have been using my motor bike on the sand , while having the ear plugs every time I swallowed I heard this sound like , ear being released like "tsss" on the left ear but I thought it was normal however I was swallowing to hear that sound pretty often , but today (Saturday ) I suddenly felt this blocked feeling and my voice was muffled in my left ear when I eat it gets 90 % better but gradually comes back and when I swallow my left ear cracks a lot

Does anyone know why this is happening ? I've been to an ent and he said my ears are normal
Any input would be appreciated