PLEASE ANY HELP 29M

The past two days I have felt a weird “pain” or something pressing in my chest. It started yesterday morning and then I felt like throwing up. So I decided to go to the ER and they found nothing other than my RBC was high. So after I got home I had another episode and called the veteran crisis line which I admit helped a tad. And this is all while having this “impending doom” feeling. So last night I did a whole meditation relaxation cool down ritual to get ready for bed and slept great!!!…..

…then I wake up this morning and the anxiety came back and I went to go throw up right away. The weird feeling came back in my chest and all these negative thoughts about dying and everyone I know dying. I went over to my girlfriend’s house and proceeded to have a meltdown. I have never cried like that in my adult life. We lost our other dog a month ago and I didn’t think it would affect me this much. I think all of my fears and grief finally came crashing in and my appetite has been non existent.

I went to the park with my little brother my girlfriend and my dog and after about an hour of walking around I felt better. Now the doom is at about 50% but my appetite is still gone. I fear that my sleep isn’t going to be great and I also fear that when I wake up it’s going to repeat all over again and I can’t keep having this horrible feeling. I’m sorry I know this post is all over the place.