Aww chick hope youre ok, maybe you have Kidney stones, I had them with DD and Ive already been sent to hospital twice this pregnancy with them. Although mine dont always show up in the urine tests, the pain from them is unbelievable and have set of BH in me. Your BP is Blood pressure, it could be raised because of the pain your in, which also would make your heart race. They'll keep a close eye on that to make sure it doesnt go too high. Hope the scan goes well chick. xxxxx