This just happened to me on my realm today. I'm playing on Pocket Edition v1.20.62 - I built a large nether portal in the overworld (7 blocks wide x 13 blocks high) as I'm making it look like an old stone archway in front of it.
When I first built the portal I heard a piglin dying in the portal (not kidding, it was screaming) which I have never heard before.
This was my first time going through, I was near the outer wall of my Overworld portal, I could hear that I was suffocating on the loading screen and then I just died and respawned.
I went through again and stayed more in the middle and I was able to get through and pick up all my stuff.
I got a lay of the land, picked up the quartz I needed and went back through. No issues going back to the overworld. I haven't tried again, but after I came out, about a second later I heard a piglin dying/screaming again. My portal in the nether seemed very high up in the world, about 20 blocks below bedrock ceiling. My portal in the overworld is at 207, 123, -23 and my nether portal is at 39 ,104, -18
JadeFardreamer
This just happened to me on my realm today. I'm playing on Pocket Edition v1.20.62 - I built a large nether portal in the overworld (7 blocks wide x 13 blocks high) as I'm making it look like an old stone archway in front of it.
When I first built the portal I heard a piglin dying in the portal (not kidding, it was screaming) which I have never heard before.
This was my first time going through, I was near the outer wall of my Overworld portal, I could hear that I was suffocating on the loading screen and then I just died and respawned.
I went through again and stayed more in the middle and I was able to get through and pick up all my stuff.
I got a lay of the land, picked up the quartz I needed and went back through. No issues going back to the overworld. I haven't tried again, but after I came out, about a second later I heard a piglin dying/screaming again. My portal in the nether seemed very high up in the world, about 20 blocks below bedrock ceiling. My portal in the overworld is at 207, 123, -23 and my nether portal is at 39 ,104, -18