Hello and thank you for asking HCM, I understand your worry , especially while it is affecting your pregnancy. Torleva belongs to the FDA pregnancy category C which means that animal reproduction studies have shown an adverse effect on the fetus but there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks. So take the pills only if your doctor ordered this medication and if he thinks that it is safier for you and your baby to take this pills than being without them. I hope this answer was helpful to you.