Anyone else experience near fainting spells?

So I was 6 months post op when I found I was pregnant.  I am 15 weeks pregnant and have been having these episodes of feeling ike I am going to faint, sweating and my arms and legs get very weak.  I have never had this happen before. My OB thinks that it has to do with my blood pressure dropping but I don't agree.  It happens as I am sitting down or driving or walking.  Anyone else experience anything like this?
Thanks for any information you can provide!

I have the same issues and its mostly from low blood pressure. I also have some issues with dropping blood sugar. I drink at least one glass of tea a day to help get my blood going a little better. I also eat more often which helps. I also keep a piece of candy in my purse for when I feel the shakiness. It has all worked so far. The tea though in the begining helped a whole lot though. I felt completely different after I started drinking it. I do have very low blood pressure and it effects you in just the way you are saying. I just did what they suggested and its been working very well so far. Good luck!!

 Not only did I have near fainting spells but I actually fainted once.  Mine was due to low blood pressure.  I would be fine then all of a sudden my pressure would drop and then I'd get all the same symptoms as you.  The one time I actually fainted it was also accompanied with my ears ringing/popping.  My dr just said that it happens a lot in pregnancy and to just take everything really slow and when those symptoms pop up to make sure im sitting down.  

I was standing in line last week at a baby consignment sale and almost fainted.   I broke out in a cold sweat and started seeing black spots.  I told the lady behind me that I was pregnant, just in case I actually did pass out.   After sitting down for about 5 mintues I felt back to normal again.   In the first trimester if I stood up too fast or bent over alot I would feel like I was going to faint.    Not for sure what causes it....other than being pregnant.   I'm just hoping we don't actually faint!   I see my OB tomorrow and will ask her about it if I can remember.
Amy

Thanks Ladies for sharing.  This is my 5th pregnancy (1 lost at 18 weeks) and I have never had anything like this happen.  I was wondering if it had to due with having wls. 
I have had a lot of new things this pregnancy, which I attribute to having wls, not even a year ago but they are all things expected, for example, feeling like I just had surgery (only being able to take a couple of bites at a time), becoming lactose intolerant, more nausea, more bloating and more stomach cramps and having trouble keeping my fluids in.  My morning sickness was extreme and I lost 10 lbs in 2 months.  On the up side, this is the first pregnancy for me that I don't already look 5 months pregnant and all my normal clothes still fit, which was never the case with previous pregnancies, even my first.

I have blood pressure issues when I am not preggers. It totally sounds like that's what it is. I can be sitting and all of a sudden have it bottom out. Gotta get flat ASAP when that happens.