It could be nothing, however, I think I would see a doctor and tell him about it. You are really young, so, I suspect he will tell you the same thing, but, I would rather be safe than sorry. Blood pressure is good, but, some doctors like it even lower.
I pressed send too soon. I would also considered getting checked by chiropractor. I just remembered that I have had similar feelings, and it was my neck being out of alignment that caused the pain. Just an idea, but, it might help.
Hi and welcome to the GERD forum.
U should deff see a dr as Sassy has suggested.It is not a good think to try and dx urself and expect to feel better.
Since u have had issues with gerd for a while, and ur ear is causing issues in addition to the chest pain u may want to see if u have a sinus issue...draining sinuses can cause gerd/acid reflux.
Keep us posted on ur progress
"selma"