What made you buy one? Did you consult with a dr before purchasing?! How far along were you when you used it, what brand and how times did you use it?! Im debating whether to buy one or not as im not 100% sure how i would feel if i cant find the heartbeat and if its safe enough for constant use?!! I had 2 mcs last yr soo i dont want to do anything that will jeopardize my pregnancy.... help??! Thanks..