Breathing anxiety is destroying my life

i have suffered with anxiety my entire life but have always learned to manage it, this will be my first time ever resorting to a forum cause right now i feel like I need to surround myself with people who have suffered and know the pain anxiety can cause. I am 24 years old and my fiance and me just had a baby last week and I have been very stressed , my issues started when i was experiencing severe leg cramping and googled how to relieve it and came across it possibly being a pulmonary embolism. I setup a appointment with my doctor who referred me to get a ultrasound of my leg and blood work, I went to the appointment and it came back clear they ran D DIMER test to check for clotting it came back negative, I went home and began experiencing a shortness of breath ive never felt before almost like im being suffocated or like asthma without the wheezing.. I Rushed to the ER they ran a series of tests and they all came back good (EkG CHEST XRAY CbC AND A D DIMER again) they said i was anxious... i wanted to believe them and went 5 more days with the symptoms and finally rushed to the ER again and told them they missed something i was experiencing chest pain when breathing shortness of breath and felt like I was going to die ..... they issued me muscle relaxers and referred me to see someone for anxiety.. its not 2 days since then and im working alot and extremely stressed i am trying to be strong for my son and fiance but i feel like my symptoms are worsening not getting better i ak convinced I have a missed pulmonary embolism cause the doctors didnt run a CT scan and that is the main test used to rule out PE.. and i saw online the d dimer test can give false negatives so im just stuck in this state of feeling like im suffocating and I am going to die, has anyone ever experienced this weird sensation it doesnt feel like normal breathing issues from anxiety which ive had it feels like im actually getting just enough air and i get this sensation that at any minute ill stop breathing entirely..

david, i know exactly how you feel. ive been thru it and its very scary. but i also know that anxiety can do that too.
you said that u have been very stressed lately. what is stressing you? Work? New baby to support? something else? Without us realizing it, stress can build up and up inside of us and then suddenly symptoms will appear like chest pain, shortness of breath etc. my stress built up so badly that i thought FOR SURE i had MS ! NUMBNESS, tingling, floaters in eyes, short of breath, weak arms, legs. etc.that’s when I was in my 20s. All the symptoms were due to stress and anxiety.
if you had a pulmonary embolus , by now it would’ve done its worst damage .
DO this:
when u feel panic with short of breath, etc , listen to a short but very effective meditation on YouTube. She GUIDES you through it and by the time it’s done you feel so much better ! search for “stop panic attacks” then scroll to “dont panic” in black letters.
THERE are many great ones for breathing, anxiety, panic, sleep. AND relaxing body scan meditations are great.
I FEEL like im floating, so peaceful.
this way u will know its anxiety related!
your child needs you. u Will be fine. I also suggest speaking with a counselor who can really help you. Don’t read anything online because it does not pertain to your individual situation. Enjoy your family!

Jan I wanna thank you for taking time out of your day to respond to me , I am going to youtube videos and try those relaxation techniques. I think my biggest problem is the anxiety for me always masks itself in a new way, if I learn to cope and manage one symptom another appears and its hard to work through. I agree with everything you are saying and I do appreciate the kind words thank you again.