I need some tips 😔

Tips for mental health, I've been having anxiety attacks due to my thyroid being out of wack after losing my baby in april..i was on ativan and tapered off. I haven't had one in 2 months but yesterday was so bad i took one and it took a long time to work..My anxiety normally feels like head pressure, well the newest symptom is being felt all in my chest..ive been to the ER over 40 times this year for chest pain and headaches..it always come back to anxiety..no matter how many test they do and how much blood they draw i cant convince myself that im okay and not dying because thats what it feels like..my anxiety last week mimicked a heart attack..i had every symptom just for it to calm down as soon as i got to the ER. Im tired of this. Its taking over my life and i feel like im living in fear of something thats not there. I guess i just need some words of encouragement, ive tried everything natural that u can think of. I've been through alot this past year, from losing my mom, finding out my husband had an affair last Thanksgiving and then losing the baby..i never really got closure from the affair because we only did one session of counseling due to covid shutting everything down...Although its only been a year Im still planning to divorce him..But I've been more worried about my mental health..i just feel confused and helpless at this point and idk what to do....Its alot more to say but I don't want the post to be that long ...