Hi shuddupheidi,
Great username! I'm so sorry you're having such a hard time with your health. Chest pains are scary, but you're not alone in your experiences!
Costochondritis can be a symptom of fibromyalgia, as can all manner of phantom chest pains, including feeling as if there's something wrong with the heart or lungs, that the ribs or breastbone are bruised, or shooting pains radiating out from the chest. Not fun! I get this sometimes - particularly when I'm in a flare and all my symptoms are up - and can really relate on how horrid it feels. If you use the search function here in the forum, you can find other discussions about chest pains and fibro.
You mentioned that your heart rate is a bit wonky - can you describe a bit better what this is like? Fibromyalgia doesn't usually cause palpitations, but possible co-conditions can affect blood pressure, which can give us the sense that our heart is racing. Stress can impact the heart, and it sounds like you've been very worried. Medication can also cause these kinds of issues, so it could be worth reviewing what you're taking with your doctor. A quick search tells me that this is a possible side effect of Omeprezole.
Fibromyalgia is generally characterised by widespread pain, fatigue, and depression - alongside an array of other potential symptoms and co-conditions. The trigger point diagnosis is not really used by those in the know anymore, as it isn't very accurate - those with fibromyalgia don't tend to experience them consistently, and so it's no longer recommended as a diagnostic tool. Anxiety definitely seems to come in the mix, not least of all because experiencing the onset of the condition can be a rough ride. From what you're describing, I think fibromyalgia is worth looking into, but keep in mind that symptoms lasting at least three months is generally considered one of the diagnostic criteria.
Speaking of diagnosis, the thing about fibroymalgia is that it's a conclusion reached via elimination. There are other health conditions that can cause a similar presentation - like ME, MS, arthritis, lupus, lyme disease, etc. - so if you suspect you have fibro, it's necessary to go through the diagnosis process with a supportive doctor. If you have a presentation that meets the criteria for fibromyalgia, and the doctor can't find any other cause, that is when fibro would be diagnosed. Do you have a doctor that you feel you could discuss it with?
Finally, there are lots of things that we can do to help ease fibromyalgia symptoms - and they are all things that would benefit anyone who is having a hard time physically, so there's no harm in giving them a try right away! Managing fibromyalgia is all about supporting your body as much as you can, and learning to avoid or manage the triggers that impact you. Overdoing things or experiencing intense stress can be particular troublemakers. Helpful habits include things like learning new stress management techniques (meditation, breathing exercises, relaxation techniques - whatever works for you), improving sleep hygiene, eating healthily, committing to a gentle but consistent exercise routine, and learning to pace your activity. Have a Google of "spoon theory" if you haven't heard of that before, and check out our moderator Sunkacola's
great advice for newcomers.
There are lots of fantastic people here who will happily give you advice as you go through this. If you do discover that you have fibro, then there are lots of ways to find empowerment, even if the condition isn't curable at this time. Try not to stress, and be extra kind to yourself - worrying always just adds to the load our bodies are already carrying. Good luck with everything, and don't hesitate if you've got any more questions