Well, your numbers aren't anything too concerning, IMO. My BP is normally around 110/70 or so, and during pregnancy is often about 90/60. However, the symptoms are obviously stressful and concerning for you. It sounds like maybe you had an episode of very low blood pressure, which had recovered by the time you were checked. The other possibility that I can think of is low blood sugar. Had you eaten recently when this happened?
I'm afraid I can't offer any real great advice here, but try not to stress too much. If you feel faint when you are out and about, find a spot to sit or lie down immediately, until you feel OK again. Also, just because your tests were marked "urgent" doesn't necessarily mean that there is something drastic going on. Just means that the doctor wants the results back sooner. Hope your doctor has some good answers for you soon! All the best!