Passing out during blood work...

So a little background, I’m about 6 weeks pregnant as of today, I typically have blood pressure on the higher end (it was about 130/90 the other day), had blood work done then and everything was fine. 2 days later (today) I go in for follow up hcg blood work, had eaten a light breakfast about an hour prior, the girl couldn’t find my vein very well and was basically playing around with it, I ended up passing out! I have no clue for how long but I was sweaty and my ears were ringing and my vision was blurry. One of the nurses checked my blood pressure and it was at 120/58... has anybody else had something like this happen? Definitely freaked me out!