anxiety and hiatal hernia/gerd?

[phillips10]

i am 24 yr old female i dont smoke or drink or do drugs or drink any caffeine. 3 months ago i went to a and e with chest pain ecg blood tests came back ok said indigestion and costocondritis. so went to my doctors gave me omeprazole tablets, i also have ibs have done since having my first son. the omeprazole tablets made me so ill i couldnt eat for a week, so switched them to ranitidine. during this time i have been to a and e 5 times with pain and tingles and back pain, all ecgs were fine all blood tests fine chest x ray fine, also been to doctors who ran blood tests for everything including thyroid, liver, blood cell count and diabetes, blood clots. also had stool sample and urine test all fine. i had 24 hr heart monitor my doc took quick look before sending to cardiologist said my heart did race a lot and could be svt and gave me bisoprolol tablets then 2 weeks later got results back and was normal so came off tablets, also tried cimitidene tablets and now changed to laprosole tablets as gas issues still bad and nothing seems to help. my   doc now says its anxiety and put me on sertraline tablets. i am going out of my mind i keep thinking having heart attack and doc is wrong and theres something wrong with my heart. heres my symptons- chest pressure and middle back pain sometimes fullness in neck shoulders and ears, heartburn, bad bowels, left jaw neck shoulder pain which scares me most as its pretty constant and tender sometimes get mildly on right side but mostly left. tired all time feel chesty and out of breathe and get more out of breathe with simplest things. i have no family history of heart problems we do have history of hiatal hernias which doc says it is but hasnt given me any tests for it. i know i am highly anxious because keep thinking its my heart, also under lot of stress my grandad dying of bowel cancer and my brothers best mate was only 19 and recently died of heart attack (however he had hole in heart and pacemaker) which obviously increased my anxiety. but can anyone shed any light into my symptons, is it safe to rule out heart problems, pulse is regular it does get faster when breathe in and slows when breathe out my doc said that was fine still within about 70-80 bpm resting. im getting so down thinking doc just doesnt listen to me now as says anxiety, has anyone had this with anxiety/gerd or hernia symptons? any advice appreciated, thanks.
ps i did make myself worse by googling my symptons and keep doing it so please no nasty comments.

[mammo]

I think you can put the worry over your heart to rest, it's fine. It's often very difficult to accept the symptoms that anxiety can cause, but they are very real and scary.  We always suggest that one rule all all other causes for their symptoms, and if everything checks out fine then it's time to address the anxiety.  By addressing it you will either rule it in or out....just like anything else.  The worry over your heart may be keeping your anxiety ramped up which just creates more symptoms and more anxiety....a vicious cycle. I do wish you all the best.

[phillips10]

also forgot to mention along with jaw pain on left side get pains down both arms and tingling in fingers sometimes a throbbing feeling.