Hello, I understand your problem. Duvadilan is usually prescribed to delay the delivery of baby. As such it will not cause any of the problems which you have mentioned. Swelling of limbs usually occurs in pregnancy. So, I am of the opinion that Duvadilan has nothing to do with your limb swelling. Your blood pressure is also normal. As it is your precious pregnancy, I suggest you to visit your doctor to get an examination done to be on safer side. I assure you that there is nothing to worry. Take care. Feel free to contact me for any further query. Regards, Dr. Prathap