I have read that Braxton Hicks are normal but then I've read that if you're  having them more frequently over a certain time to monitor them & call your doctor. Well so far I've had 10 in this hour. They're not painful but very intense & noticeable. I have vasovagal syncope & was given magnesium Sulfate before. I hope it isn't preterm labor. What should I do? Should I be worried?