Low blood pressure is a problem if it causes dizziness and fainting, which seems to have happened in your case. There are three main types of low blood pressure, also called hypotension:
* Orthostatic hypotension, including postprandial orthostatic hypotension
* Neurally mediated hypotension (NMH)
* Severe hypotension brought on by a sudden loss of blood
The following tests may be done in order to diagnose the cause of low blood pressure:
* Complete blood count ( CBC) and other blood tests, including blood differential
* Blood cultures to check for infection
* ECG
* Urinalysis
* X-ray of the abdomen
* X-ray of the chest
I'd suggest that you go to your doctor's and look into the matter seriously.