Hey, final year med student here, you sound like you might have EDS, literally all the symptoms.

This is the second time I have seen this constellation of symptoms. Or could be something similar. Would also need to hit lung, GI, tendons. Anyone tested for EDS yet?

Ehlers-Danlos syndrome (EDS) type IV, also known as the vascular type of EDS, is an inherited disorder of connective tissue characterized by arterial and digestive complications which are rarely observed in other forms of EDS and affect 80% of patients by the age of 40 [1]. Pulmonary complications are rare including pneumothorax, hemoptysis, cavitary lung lesions and bullous emphysema [2]. Pulmonary signs is very uncommon as first presentation of type IV EDS

Soft tissue overuse injury may lead to tendonitis and bursitis without joint inflammation in most cases.

And I do not know anything else about about you obviously, so you can't diagnose yourself like this, but it might be rare enough that the doctors, which I am sure are excellent as they are from NUH, might not get initially.